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Prof. Oscar Oviedo-Trespalacios
Queensland University of Technology (QUT)

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0 Ergonomics
0 Human Factors
0 Injury Prevention
0 Road Safety
0 intelligent transportation systems

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Injury Prevention

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Journal article
Published: 02 July 2021 in Transportation Research Part D: Transport and Environment
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The present study quantitatively investigates the influence of booking app-related risk and vehicle & driver-related risk on ride-sourcing passengers’ trust, satisfaction and loyalty. A conceptual model was developed and tested with data collected from 545 ride-sourcing users in Ho Chi Minh City, Vietnam. The findings indicated that perceived vehicle & driver-related risk directly affected passengers’ satisfaction and loyalty significantly. At the same time, trust mediated the relationships between perceived booking app-related risks and satisfaction and loyalty. These findings enable practitioners and policymakers to better prioritise risk dimensions when developing strategies to increase passengers’ trust, satisfaction and loyalty. Finally, the insights provided in this investigation can be used as a guide for ride-sourcing companies to improve risk manangement and risk communication efforts to increase patronage.

ACS Style

Duy Quy Nguyen-Phuoc; Oscar Oviedo-Trespalacios; Nguyen S. Vo; Phuong Thi Le; Tiep Van Nguyen. How does perceived risk affect passenger satisfaction and loyalty towards ride-sourcing services? Transportation Research Part D: Transport and Environment 2021, 97, 102921 .

AMA Style

Duy Quy Nguyen-Phuoc, Oscar Oviedo-Trespalacios, Nguyen S. Vo, Phuong Thi Le, Tiep Van Nguyen. How does perceived risk affect passenger satisfaction and loyalty towards ride-sourcing services? Transportation Research Part D: Transport and Environment. 2021; 97 ():102921.

Chicago/Turabian Style

Duy Quy Nguyen-Phuoc; Oscar Oviedo-Trespalacios; Nguyen S. Vo; Phuong Thi Le; Tiep Van Nguyen. 2021. "How does perceived risk affect passenger satisfaction and loyalty towards ride-sourcing services?" Transportation Research Part D: Transport and Environment 97, no. : 102921.

Journal article
Published: 02 July 2021 in Transportation Research Part A: Policy and Practice
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Ride-hailing services are increasingly consolidating their role in the transport sector in low- and middle-income countries where there is limited investment in public transport. However, much is unknown about the determinants of ride-hailing service use and quality of the service. The present study investigates the direct and indirect influences of perceived quality of ride-hailing service including perceived booking app and perceived post-booking service quality on continuous usage intention and word-of-mouth (WOM) of ride-hailing passengers. Emerging research has aimed to understand the hierarchical structure of ride-hailing service quality (including booking app and post-booking service). Therefore, this study proposes a formative hierarchical component model of perceived booking app quality consisting of seven dimensions (i.e., privacy and security, ease of use, functionality, design, information accuracy, route detection, and service). Likewise, the perceived post-booking service quality is comprised of four dimensions (i.e., reliability, personal, convenience, and tangibility). Data used for testing the model was collected from 536 ride-hailing service users in Ho Chi Minh city, Vietnam. The results provide insights into attributes forming perceived quality of ride-hailing booking apps and perceived post-booking service quality and how these constructs affect passenger loyalty. The results are also useful for ride-hailing companies in their efforts to prioritise critical service attributes and ensure their service quality meets or exceeds passengers’ expectations.

ACS Style

Duy Quy Nguyen-Phuoc; Nguyen S. Vo; Diep Ngoc Su; Vinh Hoang Nguyen; Oscar Oviedo-Trespalacios. What makes passengers continue using and talking positively about ride-hailing services? The role of the booking app and post-booking service quality. Transportation Research Part A: Policy and Practice 2021, 150, 367 -384.

AMA Style

Duy Quy Nguyen-Phuoc, Nguyen S. Vo, Diep Ngoc Su, Vinh Hoang Nguyen, Oscar Oviedo-Trespalacios. What makes passengers continue using and talking positively about ride-hailing services? The role of the booking app and post-booking service quality. Transportation Research Part A: Policy and Practice. 2021; 150 ():367-384.

Chicago/Turabian Style

Duy Quy Nguyen-Phuoc; Nguyen S. Vo; Diep Ngoc Su; Vinh Hoang Nguyen; Oscar Oviedo-Trespalacios. 2021. "What makes passengers continue using and talking positively about ride-hailing services? The role of the booking app and post-booking service quality." Transportation Research Part A: Policy and Practice 150, no. : 367-384.

Systematic reviews and meta analyses
Published: 25 June 2021 in Pain
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Driving is a complex task that requires both the ability to rapidly identify potential hazards and to respond appropriately to driving situations to avoid crashing. A great deal of research has sought to increase road safety by focusing on risky behaviours, very few of which have explored the effects of chronic pain on driving behaviour. This systematic review aimed to assess driving behaviour and motor vehicle crash risk in drivers with chronic pain. Four databases (Embase, PubMed, Scopus, and PsycINFO) were searched using relevant search terms. From 8543 studies, 22 studies met the eligibility criteria for inclusion in this review. A driving behaviour framework, based on the Michon model of driving behaviour, is proposed to map the effect of chronic pain on driving behaviour. Findings suggest that drivers with chronic pain engage in risk-compensatory strategies that are positive from a precautionary perspective. However, there is considerable variability in the use of such strategies across different samples, suggesting that there are significant barriers and facilitators involved in these decisions. Moreover, our findings provide some evidence that chronic pain could increase crash risk and changes in driving behaviour among drivers. Evidence-based recommendations for practitioners and policymakers are proposed regarding the risks of driving in individuals experiencing chronic pain. Future research into chronic pain in driving could benefit from having a unified evidence-based approach to determine behaviour at all levels of the driving task.

ACS Style

Atiyeh Vaezipour; Oscar Oviedo-Trespalacios; Mark Horswill; J.E. Rod; Nicole Andrews; Venerina Johnston; Patricia Delhomme. Impact of chronic pain on driving behaviour. Pain 2021, Publish Ah, 1 .

AMA Style

Atiyeh Vaezipour, Oscar Oviedo-Trespalacios, Mark Horswill, J.E. Rod, Nicole Andrews, Venerina Johnston, Patricia Delhomme. Impact of chronic pain on driving behaviour. Pain. 2021; Publish Ah ():1.

Chicago/Turabian Style

Atiyeh Vaezipour; Oscar Oviedo-Trespalacios; Mark Horswill; J.E. Rod; Nicole Andrews; Venerina Johnston; Patricia Delhomme. 2021. "Impact of chronic pain on driving behaviour." Pain Publish Ah, no. : 1.

Data visualization
Published: 17 June 2021 in PLOS ONE
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Advanced Driver Assistance Systems (ADAS) are being developed and installed in increasing numbers. Some of the most popular ADAS include blind spot monitoring and cruise control which are fitted in the majority of new vehicles sold in high-income countries. With more drivers having access to these technologies, it is imperative to develop policy and strategies to guarantee the safe uptake of ADAS. One key issue is that ADAS education has been primarily centred on the user manual which are not widely utilised. Moreover, it is unclear if user manuals are an adequate source of education in terms of content and readability. To address this research gap, a content analysis was used to assess the differences in ADAS-related content and readability among the manuals of the highest selling vehicles in Australia. The qualitative findings showed that there are seven themes in the user manuals: differences between driving with and without ADAS, familiarisation requirements, operational limits of the ADAS, potential ADAS errors, behaviour adaptation warnings, confusion warnings, and malfunction warnings. The quantitative analysis found that some of the manuals require several years of education above the recommended for a universal audience (>8 years) to be understood. Additionally, there is a notable number of text diversions and infographics which could make comprehension of the user manual difficult. This investigation shows that there is a lack of standardisation of ADAS user manuals (in both content and delivery of information) which requires regulatory oversight. Driver ADAS education needs to be prioritised by policymakers and practitioners as smart technology continues to increase across the transport system. It seems that current strategies based on user manuals are insufficient to achieve successful adoption and safe use of these technologies.

ACS Style

Oscar Oviedo-Trespalacios; Jennifer Tichon; Oliver Briant. Is a flick-through enough? A content analysis of Advanced Driver Assistance Systems (ADAS) user manuals. PLOS ONE 2021, 16, e0252688 .

AMA Style

Oscar Oviedo-Trespalacios, Jennifer Tichon, Oliver Briant. Is a flick-through enough? A content analysis of Advanced Driver Assistance Systems (ADAS) user manuals. PLOS ONE. 2021; 16 (6):e0252688.

Chicago/Turabian Style

Oscar Oviedo-Trespalacios; Jennifer Tichon; Oliver Briant. 2021. "Is a flick-through enough? A content analysis of Advanced Driver Assistance Systems (ADAS) user manuals." PLOS ONE 16, no. 6: e0252688.

Journal article
Published: 10 June 2021 in Transportation Research Part A: Policy and Practice
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The availability of advisory warnings via Vehicle-to-Vehicle and Vehicle-to-Infrastructure communication in the connected environments is expected to gradually increase over the next few years. Much of the research on advisory warning systems have examined driving behaviour in response to unexpected driving hazards; however, very little research has been conducted on common driving interactions such as interacting with pedestrians at pedestrian crossings. Therefore, the aim of this study is to investigate the effects of the connected environment on driving behaviour at pedestrian crossings. The connected environment was designed within the CARRS-Q advanced driving simulator. A combination of auditory (beep sound) and imagery message was simultaneously displayed on the windscreen to advise the driver on the presence of a pedestrian entering from a sidewalk. Seventy-eight licensed drivers drove the simulator in two driving conditions, namely, baseline and connected environment. The participants were 18–65 years old, and a third of them were females. Drivers' response to the driving aids and the braking behaviour were analysed in the latent response phase and the observable response phase, and the corresponding response times were modelled using the hazard-based duration modelling approach. In particular, this study applied the Weibull accelerated failure time model with shared frailty accounting for multiple observations from the same driver. Results showed that the time taken to respond to the pedestrian in the latent response phase was longer when the advisory warning was provided to the drivers, but the corresponding time in the observable response phase was shorter, indicating that drivers take an informed decision in the connected environment. Moreover, the safety margin—measured in terms of time-to-collision—was higher in the connected environment than the traditional driving environment, indicating a safer behavioural adaptation towards the connected environment.

ACS Style

Mazharul Haque; Oscar Oviedo-Trespalacios; Anshuman Sharma; Zuduo Zheng. Examining the driver-pedestrian interaction at pedestrian crossings in the connected environment: A Hazard-based duration modelling approach. Transportation Research Part A: Policy and Practice 2021, 150, 33 -48.

AMA Style

Mazharul Haque, Oscar Oviedo-Trespalacios, Anshuman Sharma, Zuduo Zheng. Examining the driver-pedestrian interaction at pedestrian crossings in the connected environment: A Hazard-based duration modelling approach. Transportation Research Part A: Policy and Practice. 2021; 150 ():33-48.

Chicago/Turabian Style

Mazharul Haque; Oscar Oviedo-Trespalacios; Anshuman Sharma; Zuduo Zheng. 2021. "Examining the driver-pedestrian interaction at pedestrian crossings in the connected environment: A Hazard-based duration modelling approach." Transportation Research Part A: Policy and Practice 150, no. : 33-48.

Review
Published: 08 June 2021 in Journal of Transport & Health
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Pedestrians are vulnerable road users exposed at risk during their interaction with vehicles in uncontrolled urban areas. In this paper, a critical overview of the literature and meta-analyses were conducted on the topic of pedestrian gap acceptance choice during midblock street crossings. Α large number of studies examining personal and contextual factors affecting midblock crossing choices were identified. In an effort to condense research outputs, a quantitative approach was adopted alongside qualitative assessments. Meta-analyses were conducted to summarize the impacts of various predictor variables on pedestrian gap acceptance probabilities from binary logistic models in midblock locations. After application of a rigorous set of criteria, 14 publications were considered appropriate to conduct meta-analyses on beta coefficients of four factors: vehicle speed (VS), gap size (GS), waiting time (WT) and frequency of attempts (FA). Statistically significant results were obtained for VS, GS and FA. Specifically, it was determined that for one unit increase in incoming VS, there is a 10% decrease (OR=0.9) in the odds of pedestrians crossing the road (accepting the incoming time gap) for pedestrians. For one unit increase in temporal GS, the odds of crossing the road become 7.22 times larger for pedestrians. For each crossing attempt, as measured by FA, the odds of crossing the road become 16.6 times larger for pedestrians. WT was determined to have a non-significant impact on pedestrian crossing odds. To the best of the authors' knowledge, this is the first time that a meta-analysis of the critical factors influencing gap acceptance of pedestrians in midblock street crossings is carried out. Study findings are useful for practitioners and policymakers to formulate appropriate management plans to reduce interactions of pedestrians and vehicles at uncontrolled urban midblock locations. Future research is needed to further understand the determinants of gap choice decision making.

ACS Style

Athanasios Theofilatos; Apostolos Ziakopoulos; Oscar Oviedo-Trespalacios; Andrew Timmis. To cross or not to cross? Review and meta-analysis of pedestrian gap acceptance decisions at midblock street crossings. Journal of Transport & Health 2021, 22, 101108 .

AMA Style

Athanasios Theofilatos, Apostolos Ziakopoulos, Oscar Oviedo-Trespalacios, Andrew Timmis. To cross or not to cross? Review and meta-analysis of pedestrian gap acceptance decisions at midblock street crossings. Journal of Transport & Health. 2021; 22 ():101108.

Chicago/Turabian Style

Athanasios Theofilatos; Apostolos Ziakopoulos; Oscar Oviedo-Trespalacios; Andrew Timmis. 2021. "To cross or not to cross? Review and meta-analysis of pedestrian gap acceptance decisions at midblock street crossings." Journal of Transport & Health 22, no. : 101108.

Journal article
Published: 04 June 2021 in Accident Analysis & Prevention
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Alcohol is a global risk factor for road trauma. Although drink driving has received most of the scholarly attention, there is growing evidence of the risks of alcohol-impaired walking. Alcohol-impaired pedestrians are over-represented in fatal crashes compared to non-impaired pedestrians. Additionally, empirical evidence shows that alcohol intoxication impairs road-crossing judgements. Besides some limited early research, much is unknown about the global prevalence and determinants of alcohol-impaired walking. Understanding alcohol-impaired walking will support health promotion initiatives and injury prevention. The present investigation has three aims: (1) compare the prevalence of alcohol-impaired walking across countries; (2) identify international groups of pedestrians based on psychosocial factors (i.e., Theory of Planned Behaviour (TPB) and perceptions of risk); and (3) investigate how segments of pedestrians form their intention for alcohol-impaired walking using the extended TPB (i.e. subjective norm, attitudes, perceived control, and perceived risk). A cross-sectional design was applied. The target behaviour question was “have you been a pedestrian when your thinking or physical ability (balance/strength) is affected by alcohol?” to ensure comparability across countries. Cluster analysis based on the extended TPB was used to identify groups of countries. Finally, regressions were used to predict pedestrians’ intentions per group. A total of 6,166 respondents (Age M(SD) = 29.4 (14.2); Males = 39.2%) completed the questionnaire, ranging from 12.6% from Russia to 2.2% from Finland. The proportion of participants who reported never engaging in alcohol-impaired walking in the last three months ranged from 30.1% (Spain) to 83.1% (Turkey). Four groups of countries were identified: group-1 (Czech Republic, Spain, and Australia), group-2 (Russia and Finland), group-3 (Japan), and group-4 (final ten countries including Colombia, China, and Romania). Pedestrian intentions to engage in alcohol- impaired walking are predicted by perceptions of risk and TPB-psychosocial factors in group-1 and group-4. Favourable TPB-beliefs and low perceived risk increased alcohol-impaired walking intentions. Conversely, subjective norms were not significant in group-2 and only perceived risk predicted intention in group-3. The willingness of pedestrians to walk when alcohol-impaired differs significantly across the countries in this study. Perceived risk was the only common predictor among the 16 countries.

ACS Style

Oscar Oviedo-Trespalacios; Ali Kemal Çelik; Ana Marti-Belda; Anna Włodarczyk; Daniel Demant; Duy Q. Nguyen-Phuoc; Elisabeth Rubie; Erkan Oktay; Gabriel Dorantes Argandar; J.E. Rod; Jean Carlos Natividade; Joonha Park; Jorge Tiago Bastos; Laura Martínez-Buelvas; Maria De Fátima Pereira Da Silva; Mário Velindro; Matus Sucha; Mauricio Orozco-Fontalvo; Miguel Barboza-Palomino; Quan Yuan; Rui Mendes; Rusdi Rusli; Samira Ramezani; Sergio A. Useche; Sibele Dias de Aquino; Takashi Tsubakita; Tatiana Volkodav; Tiina Rinne; Violeta Enea; Yonggang Wang; Mark King. Alcohol-impaired Walking in 16 Countries: A Theory-Based Investigation. Accident Analysis & Prevention 2021, 159, 106212 .

AMA Style

Oscar Oviedo-Trespalacios, Ali Kemal Çelik, Ana Marti-Belda, Anna Włodarczyk, Daniel Demant, Duy Q. Nguyen-Phuoc, Elisabeth Rubie, Erkan Oktay, Gabriel Dorantes Argandar, J.E. Rod, Jean Carlos Natividade, Joonha Park, Jorge Tiago Bastos, Laura Martínez-Buelvas, Maria De Fátima Pereira Da Silva, Mário Velindro, Matus Sucha, Mauricio Orozco-Fontalvo, Miguel Barboza-Palomino, Quan Yuan, Rui Mendes, Rusdi Rusli, Samira Ramezani, Sergio A. Useche, Sibele Dias de Aquino, Takashi Tsubakita, Tatiana Volkodav, Tiina Rinne, Violeta Enea, Yonggang Wang, Mark King. Alcohol-impaired Walking in 16 Countries: A Theory-Based Investigation. Accident Analysis & Prevention. 2021; 159 ():106212.

Chicago/Turabian Style

Oscar Oviedo-Trespalacios; Ali Kemal Çelik; Ana Marti-Belda; Anna Włodarczyk; Daniel Demant; Duy Q. Nguyen-Phuoc; Elisabeth Rubie; Erkan Oktay; Gabriel Dorantes Argandar; J.E. Rod; Jean Carlos Natividade; Joonha Park; Jorge Tiago Bastos; Laura Martínez-Buelvas; Maria De Fátima Pereira Da Silva; Mário Velindro; Matus Sucha; Mauricio Orozco-Fontalvo; Miguel Barboza-Palomino; Quan Yuan; Rui Mendes; Rusdi Rusli; Samira Ramezani; Sergio A. Useche; Sibele Dias de Aquino; Takashi Tsubakita; Tatiana Volkodav; Tiina Rinne; Violeta Enea; Yonggang Wang; Mark King. 2021. "Alcohol-impaired Walking in 16 Countries: A Theory-Based Investigation." Accident Analysis & Prevention 159, no. : 106212.

Journal article
Published: 24 May 2021 in Accident Analysis & Prevention
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Drivers continually interact with other road users and use information from the road environment to make decisions to control their vehicle. A clear understanding of different parameters impacting this interaction can provide us with a new design approach for a more effective driver assistance system - a personalised trajectory prediction system. This paper highlights the influential factors on trajectory prediction system performance by (i) identifying driver behaviours impacting the trajectory prediction system; and (ii) analysing other contributing factors such as traffic density, secondary task, gender and age group. To explore the most influential contributing factors, we first train an interaction-aware trajectory prediction system using time-series data derived from the Second Strategic Highway Research Program (SHRP2) Naturalistic Driving Study (NDS). Prediction error is then analysed based on driver characteristics such as driver profile which is subjectively measured through self-reported questions, and driving performance which is based on evaluation of time-series information such as speed, acceleration, jerk, time, and space headway. The results show that prediction error significantly increased in the scenarios where the driver engaged in risky behaviour. Analysis shows that trajectory prediction system performance is also affected by factors such as traffic density, engagement in secondary tasks, driver gender and age group. We show that the driver profile, which is subjectively measured using self-reported questionnaires, is not as significant as the driving performance information, which is objectively measured and extracted during each specific driving scenario.

ACS Style

Mahrokh Khakzar; Andy Bond; Andry Rakotonirainy; Oscar Oviedo Trespalacios; Sepehr G. Dehkordi. Driver influence on vehicle trajectory prediction. Accident Analysis & Prevention 2021, 157, 106165 .

AMA Style

Mahrokh Khakzar, Andy Bond, Andry Rakotonirainy, Oscar Oviedo Trespalacios, Sepehr G. Dehkordi. Driver influence on vehicle trajectory prediction. Accident Analysis & Prevention. 2021; 157 ():106165.

Chicago/Turabian Style

Mahrokh Khakzar; Andy Bond; Andry Rakotonirainy; Oscar Oviedo Trespalacios; Sepehr G. Dehkordi. 2021. "Driver influence on vehicle trajectory prediction." Accident Analysis & Prevention 157, no. : 106165.

Encyclopedia
Published: 17 May 2021 in International Encyclopedia of Transportation
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Driver education and training are longstanding initiatives for novices to attain a driver license. More recently however, we demand more of such initiatives, expecting they can better prepare young novices to be safer in the early months and years of independent driving. In this chapter, we explore historical and current trends and evidence for these initiatives, both one-on-one and group-based initiatives, in the context of an established theoretical best-practice framework, the Goals for Driver Education. Beyond this, we highlight current lack of attention to driver education and training needs with current advances in driver support technologies in vehicles—both for novices but also experienced drivers. Moreover, we acknowledge the rapidly shifting climate of change towards increased vehicle automation and more livable cities. We argue the need to move beyond the current generalization that most driver education and training efforts are ineffective, to promote more nuanced successful approaches, and ways to best maximize the value of driver education and training to increase driver safety in a changing world.

ACS Style

Teresa Senserrick; Oscar Oviedo-Trespalacios; David Rodwell; Sherrie-Anne Kaye. Driver Education and Training for New Drivers: Moving beyond Current ‘Wisdom’ to New Directions. International Encyclopedia of Transportation 2021, 158 -164.

AMA Style

Teresa Senserrick, Oscar Oviedo-Trespalacios, David Rodwell, Sherrie-Anne Kaye. Driver Education and Training for New Drivers: Moving beyond Current ‘Wisdom’ to New Directions. International Encyclopedia of Transportation. 2021; ():158-164.

Chicago/Turabian Style

Teresa Senserrick; Oscar Oviedo-Trespalacios; David Rodwell; Sherrie-Anne Kaye. 2021. "Driver Education and Training for New Drivers: Moving beyond Current ‘Wisdom’ to New Directions." International Encyclopedia of Transportation , no. : 158-164.

Encyclopedia
Published: 17 May 2021 in International Encyclopedia of Transportation
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Driver distraction is a major concern for road safety. Distraction involves taking attention away from driving toward competing activities such as talking on a mobile phone or looking at roadside advertising signs, which could result in insufficient or no attention to activities critical for safe driving. In this chapter, we explore the mechanisms of driver distraction and its road traffic crash burden. Furthermore, this chapter introduces paradigms of prevention and summarizes key countermeasures to reduce distraction. Evidence on the effectiveness of legislation, education programs, and technological solutions such as mobile phone applications are discussed. Moreover, we acknowledge the potential role of distraction in the safe uptake of automated and connected vehicles. Looking toward the future it is likely that drivers are going to encounter new types of distractions arising from technological changes in the transport system and beyond.

ACS Style

Oscar Oviedo-Trespalacios; Michael A. Regan. Driver Distraction. International Encyclopedia of Transportation 2021, 113 -120.

AMA Style

Oscar Oviedo-Trespalacios, Michael A. Regan. Driver Distraction. International Encyclopedia of Transportation. 2021; ():113-120.

Chicago/Turabian Style

Oscar Oviedo-Trespalacios; Michael A. Regan. 2021. "Driver Distraction." International Encyclopedia of Transportation , no. : 113-120.

Short communication
Published: 29 April 2021 in Transportation Research Part F: Traffic Psychology and Behaviour
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Sexual activity while driving fits the definition of distracted driving because it involves the diversion of attention away from the driving task. However, this risky driving behaviour has received little attention compared to other distracted driving activities. To address the lack of research on sexual activity while driving, the internet was searched from April to June 2020 for media reports in which sexual activities occurred within the cabin of a moving vehicle, taking specific note of: gender, the presence of others, time of day, use of substances, the nature of the circumstances surrounding the incident, and whether crashes had occurred. A total of 106 unique and verified cases were identified from 2004 to 2020. The reports involved 76 male (71.7%) and 30 female drivers (28.3%), and there were 43 (40.5%) serious incidents that involved a crash and 23 fatalities (21.7%). In 17 (16.0%) incidents their vehicle hit another car, and a pedestrian or cyclist was hit in 3 (2.8%) incidents. The risk of a serious incident was higher during oral sex or intercourse than solitary activities (i.e. masturbation). A total of 63 (59.5%) mild incidents (without crashes or fatalities) were identified, in which reports included accounts by witnesses or police regarding sexual activity while driving. Given the potential seriousness of incidents, this topic deserves further research to better understand the prevalence and safety implications of sexual activity while driving.

ACS Style

Oscar Oviedo-Trespalacios; James G. Phillips. Sexual activity while driving: A content analysis of media reports. Transportation Research Part F: Traffic Psychology and Behaviour 2021, 80, 141 -149.

AMA Style

Oscar Oviedo-Trespalacios, James G. Phillips. Sexual activity while driving: A content analysis of media reports. Transportation Research Part F: Traffic Psychology and Behaviour. 2021; 80 ():141-149.

Chicago/Turabian Style

Oscar Oviedo-Trespalacios; James G. Phillips. 2021. "Sexual activity while driving: A content analysis of media reports." Transportation Research Part F: Traffic Psychology and Behaviour 80, no. : 141-149.

Journal article
Published: 23 April 2021 in Travel Behaviour and Society
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Taxi services have played an essential role in the transport system as they contribute to urban mobility. With the rapid development of information and communication technologies, ride-hailing services, one of the typical sharing economy forms of road transport, have become increasingly popular. The uptake of app-based technologies that support the sharing economy for transport is considered to threaten the future of traditional taxi services directly. This study aims to compare the direct and indirect effects of factors such as perceived benefits of booking method, perceived safety, involvement and satisfaction on the loyalty of passengers to ride-hailing and traditional taxi services. A structural equation model of the relationships among these constructs was tested using data collected from 545 respondents (263 ride-hailing passengers and 282 traditional taxi passengers) who have used these services at least once a month in Vietnam. The results have confirmed that there was a strong relationship between satisfaction and loyalty for ride-hailing as well as traditional taxi services. It was also evident that the variable describing the perceived benefits of booking method was the second strongest factor influencing traditional taxi passengers’ loyalty while the perception of safety was the second most important determinant of ride-hailing passengers’ loyalty. Results from this investigation offer insights for the development of strategies aiming at increasing the loyalty of ride-hailing as well as traditional taxi users. By focusing on the strengths and improving the weaknesses of each transport service, these two services can be complementary and co-existing without cannibalising each other. In turn this will lead to a transport system capable to serve all types of users.

ACS Style

Duy Q. Nguyen-Phuoc; Phuong Thi Kim Tran; Diep Ngoc Su; Oscar Oviedo-Trespalacios; Lester W. Johnson. The formation of passenger loyalty: Differences between ride-hailing and traditional taxi services. Travel Behaviour and Society 2021, 24, 218 -230.

AMA Style

Duy Q. Nguyen-Phuoc, Phuong Thi Kim Tran, Diep Ngoc Su, Oscar Oviedo-Trespalacios, Lester W. Johnson. The formation of passenger loyalty: Differences between ride-hailing and traditional taxi services. Travel Behaviour and Society. 2021; 24 ():218-230.

Chicago/Turabian Style

Duy Q. Nguyen-Phuoc; Phuong Thi Kim Tran; Diep Ngoc Su; Oscar Oviedo-Trespalacios; Lester W. Johnson. 2021. "The formation of passenger loyalty: Differences between ride-hailing and traditional taxi services." Travel Behaviour and Society 24, no. : 218-230.

Journal article
Published: 31 March 2021 in International Journal of Electrical Power & Energy Systems
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Electrical substations located closer to coasts and industrial zones are subjected to chemical substances and marine salts that increase pollution. Therefore, to mitigate pollution's effect on insulator performance, utility operators should frequently wash insulator chains. However, this process is not an easy task and brings extra costs due to the conventional maintenance planning that defines the washing cycles. This conventional procedure does not take into account the actual insulator pollution, but rather human experience. Thus, washing cycles may occur either when the pollution is not extensive or when it already affects the reliability of the system. Hence, the paper presents a novel method to predict the adequate time to wash the insulators based on the characteristics of leakage current in a substation on the north coast of Colombia. The method then uses the Exponentially Weighted Moving Average (EWMA) control chart to determine the appropriate days to wash insulator chains. Results show that the proposed method obtains a Mean Absolute Percentage Error (MAPE) of the leakage current two orders of magnitude smaller than the actual method. Hence, the proposed method is a useful tool for maintenance planning in utilities.

ACS Style

Rafael Castillo-Sierra; Oscar Oviedo-Trespalacios; John E. Candelo-Becerra; Jose D. Soto; Maria Calle. A novel method for prediction of washing cycles of electrical insulators in high pollution environments. International Journal of Electrical Power & Energy Systems 2021, 130, 107026 .

AMA Style

Rafael Castillo-Sierra, Oscar Oviedo-Trespalacios, John E. Candelo-Becerra, Jose D. Soto, Maria Calle. A novel method for prediction of washing cycles of electrical insulators in high pollution environments. International Journal of Electrical Power & Energy Systems. 2021; 130 ():107026.

Chicago/Turabian Style

Rafael Castillo-Sierra; Oscar Oviedo-Trespalacios; John E. Candelo-Becerra; Jose D. Soto; Maria Calle. 2021. "A novel method for prediction of washing cycles of electrical insulators in high pollution environments." International Journal of Electrical Power & Energy Systems 130, no. : 107026.

Editorial
Published: 22 March 2021 in Injury Prevention
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ACS Style

Oscar Oviedo-Trespalacios; Barry Watson. Navigation apps are becoming a threat to road safety (beyond distraction). Injury Prevention 2021, 27, 103 -103.

AMA Style

Oscar Oviedo-Trespalacios, Barry Watson. Navigation apps are becoming a threat to road safety (beyond distraction). Injury Prevention. 2021; 27 (2):103-103.

Chicago/Turabian Style

Oscar Oviedo-Trespalacios; Barry Watson. 2021. "Navigation apps are becoming a threat to road safety (beyond distraction)." Injury Prevention 27, no. 2: 103-103.

Journal article
Published: 18 February 2021 in Transportation Research Part F: Traffic Psychology and Behaviour
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This research aimed to assess the extent to which using a hand-held mobile phone affected young drivers’ (aged 17–25 years) takeback control of a simulated conditional automated vehicle (AV), relative to an auditory working memory n-back task and monitoring the road environment (control condition). In addition to takeback control, this study also applied the Theory of Planned Behaviour (TPB) to assess if there were any differences in future intentions to use AVs after participants had experienced the automated functions of the vehicle compared to pre-drive (baseline). Trust was also measured pre-and post-drive. These additional constructs were included to further assess if the predictors of intentions to use AVs changed after participants had experienced a simulator drive which involve non-driving related tasks (NDRT). Thirty-three young Australian drivers (Mage = 20.97 years, 17 females) took part in the one-hour within groups study which comprised pre-and post-drive self-report questionnaires and operating the CARRS-Q advanced driving simulator. In contrast to previous research on NDRT and takeback control (see Zhang et al., 2019), the results revealed that there were no significant differences in takeback control of the vehicle when drivers were using their hand-held mobile phone compared to completing the working memory n-back task or monitoring the road environment. However, a hierarchical regression revealed that participants reported significantly higher ratings that important others would approve of them using a conditional AV and greater control over whether or not they would intend to use an AV in the future post-drive compared to pre-drive, providing partial support for hypothesis 2. Overall, these findings suggest that using a hand-held mobile phone does not negatively influence young drivers’ takeback control of an AV. Further, the study highlights the influence that important others may have in determining whether young drivers intend to use AVs in the future.

ACS Style

Sherrie-Anne Kaye; Sébastien Demmel; Oscar Oviedo-Trespalacios; Wanda Griffin; Ioni Lewis. Young drivers’ takeover time in a conditional automated vehicle: The effects of hand-held mobile phone use and future intentions to use automated vehicles. Transportation Research Part F: Traffic Psychology and Behaviour 2021, 78, 16 -29.

AMA Style

Sherrie-Anne Kaye, Sébastien Demmel, Oscar Oviedo-Trespalacios, Wanda Griffin, Ioni Lewis. Young drivers’ takeover time in a conditional automated vehicle: The effects of hand-held mobile phone use and future intentions to use automated vehicles. Transportation Research Part F: Traffic Psychology and Behaviour. 2021; 78 ():16-29.

Chicago/Turabian Style

Sherrie-Anne Kaye; Sébastien Demmel; Oscar Oviedo-Trespalacios; Wanda Griffin; Ioni Lewis. 2021. "Young drivers’ takeover time in a conditional automated vehicle: The effects of hand-held mobile phone use and future intentions to use automated vehicles." Transportation Research Part F: Traffic Psychology and Behaviour 78, no. : 16-29.

Review
Published: 09 February 2021 in Accident Analysis & Prevention
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This systematic review sought to assess older adult pedestrian injury severity, injury by anatomical location and incidence proportions, including comparisons to younger age groups when available and provide an analysis of the quality of the existing evidence. A structured search was conducted in PubMed, Embase, Scopus, CINAHL, PsycInfo, AMED, Web of Science, LILACS and TRID. STROBE was used to assess the reporting quality of the included studies. Random-effect model meta-analysis served to obtain pooled relative risk, incidence proportions and standardized mean differences for different outcomes due to pedestrian crashes comparing older and younger pedestrians, while meta-analyses could not be conducted for pedestrian falls. We screened 7460 records of which 60 studies (1,012,041 pedestrians) were included in the review. Injured pedestrians 60+ compared to those <60 were found to have a higher relative risk of severe injury (pooled relative risk RR 1.6, 95 % CI: 1.4–2.0 p < 0.001), critical care admission (pooled RR 1.5, 95 %CI: 1.3–1.8 p < 0.001), and fatality (pooled RR of 3.7, 95 % CI: 3.0–4.5 p < 0.001). Pedestrians 60+ also had higher incidence rates of pedestrian falls causing higher injury severity. GRADE was used to evaluate evidence quality, with the results suggesting that the overall quality of the evidence supporting these findings was low. Further research is needed to understand health risks associated with older pedestrian trauma and to develop effective risk management strategies.

ACS Style

J.E. Rod; Oscar Oviedo-Trespalacios; Teresa Senserrick; Mark King. Older adult pedestrian trauma: A systematic review, meta-analysis, and GRADE assessment of injury health outcomes from an aggregate study sample of 1 million pedestrians. Accident Analysis & Prevention 2021, 152, 105970 .

AMA Style

J.E. Rod, Oscar Oviedo-Trespalacios, Teresa Senserrick, Mark King. Older adult pedestrian trauma: A systematic review, meta-analysis, and GRADE assessment of injury health outcomes from an aggregate study sample of 1 million pedestrians. Accident Analysis & Prevention. 2021; 152 ():105970.

Chicago/Turabian Style

J.E. Rod; Oscar Oviedo-Trespalacios; Teresa Senserrick; Mark King. 2021. "Older adult pedestrian trauma: A systematic review, meta-analysis, and GRADE assessment of injury health outcomes from an aggregate study sample of 1 million pedestrians." Accident Analysis & Prevention 152, no. : 105970.

Journal article
Published: 04 February 2021 in Accident Analysis & Prevention
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Carpooling consists of drivers and passengers sharing a journey and its costs. Nowadays, in the context of mobility as a service, organized carpooling encompasses a service and trust relationship between drivers and passengers, by matching common routes and splitting cost through mobile phone applications. Therefore, passengers expect a certain level of travel quality and safety. In this context, this research aims to verify the hypothesis that drivers in an organized carpooling situation (CP) show safer driving behavior in terms of speeding (SP) and mobile phone use while driving (MPU) in comparison with non-carpooling (NCP) drivers. The research is based on data from the Brazilian Naturalistic Driving Study (NDS-BR) conducted in the City of Curitiba, with 40.45 driving hours and a traveled distance of 895.87 km. Methodology included the selection of safety performance indicators on SP and MPU, use of nonparametric Wilcoxon signed rank test for safety performance indicator comparisons and Pearson Chi-Square to test the association between CP or NCP and low or high indicator values. Hypothesis test results point in the same direction and partially confirm the initial assumption that CP induces safer behavior in terms of speeding. The statistically sound results showed that CP drivers engaged in less speeding episodes and mobile phone use duration in comparison to NCP drivers, as well as lower speed while using a mobile phone. In addition, driver behavior in CP and NCP situations also differed in terms of the type of MPU, with the proportion of types of use that demand a higher level of visual and manual distraction being higher among NCP drivers. In summary, these results confirm the initial hypothesis of safer driving behavior during carpooling in terms of MPU while driving.

ACS Style

Jorge Tiago Bastos; Pedro Augusto B. dos Santos; Eduardo Cesar Amancio; Tatiana Maria C. Gadda; José Aurélio Ramalho; Mark J. King; Oscar Oviedo-Trespalacios. Is organized carpooling safer? Speeding and distracted driving behaviors from a naturalistic driving study in Brazil. Accident Analysis & Prevention 2021, 152, 105992 .

AMA Style

Jorge Tiago Bastos, Pedro Augusto B. dos Santos, Eduardo Cesar Amancio, Tatiana Maria C. Gadda, José Aurélio Ramalho, Mark J. King, Oscar Oviedo-Trespalacios. Is organized carpooling safer? Speeding and distracted driving behaviors from a naturalistic driving study in Brazil. Accident Analysis & Prevention. 2021; 152 ():105992.

Chicago/Turabian Style

Jorge Tiago Bastos; Pedro Augusto B. dos Santos; Eduardo Cesar Amancio; Tatiana Maria C. Gadda; José Aurélio Ramalho; Mark J. King; Oscar Oviedo-Trespalacios. 2021. "Is organized carpooling safer? Speeding and distracted driving behaviors from a naturalistic driving study in Brazil." Accident Analysis & Prevention 152, no. : 105992.

Journal article
Published: 16 December 2020 in Safety Science
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Research into phone use while driving has found that the threat of legal sanctions has limited effectiveness on reducing this behaviour, yet the impact of these countermeasures on concealed phone use has been frequently overlooked. This study sought to understand how legal enforcement and perceptions of safety influence concealed phone use while driving using a mixed methods approach. First, focus groups were conducted among young drivers aged between 17 and 25 years (n = 60). Observing police presence was identified as an effective deterrent, however it was also considered easy to evade detection. Reading messages while driving was the most common type of phone use while driving engaged in, and this behaviour can be considered easy to conceal; therefore, this behaviour was the focus of the subsequent quantitative study. A longitudinal repeated measures survey (n = 192) on young drivers was conducted 3 months apart to quantitatively examine the factors that influence subsequent engagement in concealed and general reading messages while driving. The results suggest that concealing the phone increases the incidence rates of phone use while driving behaviour. Punishment avoidance and perceptions of safety were: (a) highly correlated and (b) significantly predicted engagement in both concealed and general reading messages while driving. The results provide support for education campaigns that target perceptions of safety, as well as increasing apprehension certainty (e.g., via the implementation of cameras) in order for legal countermeasures to act as a larger deterrent, as opposed to counterintuitively influencing concealed phone use behaviour.

ACS Style

Verity Truelove; Oscar Oviedo-Trespalacios; James Freeman; Jeremy Davey. Sanctions or crashes? A mixed-method study of factors influencing general and concealed mobile phone use while driving. Safety Science 2020, 135, 105119 .

AMA Style

Verity Truelove, Oscar Oviedo-Trespalacios, James Freeman, Jeremy Davey. Sanctions or crashes? A mixed-method study of factors influencing general and concealed mobile phone use while driving. Safety Science. 2020; 135 ():105119.

Chicago/Turabian Style

Verity Truelove; Oscar Oviedo-Trespalacios; James Freeman; Jeremy Davey. 2020. "Sanctions or crashes? A mixed-method study of factors influencing general and concealed mobile phone use while driving." Safety Science 135, no. : 105119.

Author correction
Published: 15 December 2020 in Scientific Reports
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An amendment to this paper has been published and can be accessed via a link at the top of the paper.

ACS Style

Sonia Ortiz-Peregrina; Oscar Oviedo-Trespalacios; Carolina Ortiz; Miriam Casares-Lopez; Carlos Salas; Rosario G. Anera. Author Correction: Factors determining speed management during distracted driving (WhatsApp messaging). Scientific Reports 2020, 10, 1 -6.

AMA Style

Sonia Ortiz-Peregrina, Oscar Oviedo-Trespalacios, Carolina Ortiz, Miriam Casares-Lopez, Carlos Salas, Rosario G. Anera. Author Correction: Factors determining speed management during distracted driving (WhatsApp messaging). Scientific Reports. 2020; 10 (1):1-6.

Chicago/Turabian Style

Sonia Ortiz-Peregrina; Oscar Oviedo-Trespalacios; Carolina Ortiz; Miriam Casares-Lopez; Carlos Salas; Rosario G. Anera. 2020. "Author Correction: Factors determining speed management during distracted driving (WhatsApp messaging)." Scientific Reports 10, no. 1: 1-6.

Journal article
Published: 01 October 2020 in Transportation Research Part F: Traffic Psychology and Behaviour
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Motorcyclists are over-represented in fatal crashes in Low- and Middle-Income Countries (LMICs). In Malaysia, motorcyclists comprise about 60% of all fatalities in road crashes. However, the prevalence and determinants of risky riding behaviours have been rarely studied in the country. This study aims to investigate motorcycle-related risky riding behaviours at signalised intersections. A total of 72,377 observations were made during six days at six different signalised intersections in Terengganu, Malaysia. Four risky riding behaviours were observed together (i.e. helmet non-use, red-light running, mobile phone use, turn signal neglect) along with additional demographic and contextual factors. The most prevalent risky riding behaviour was turn signal neglect (29.7% of all observations), and the least prevalent was mobile phone while riding (0.2% of all observations). Four logistic regressions were fitted to predict the four risky riding behaviours using the demographic and contextual explanatory factors. The results suggest that helmet non-use increases among female riders, riders wearing industrial uniforms, carrying passengers, riding during the weekend, during off-peak hours, during clear weather, at T-junctions, on multi-lane roads, and on minor road approaches. Red light running increases among female riders, riders wearing industrial uniforms, carrying passengers, during clear weather, at T-junctions, on multi-lane roads, and on major road approaches. Mobile phone use increases among female riders, riders wearing industrial uniforms, carrying passengers, and at cross-junctions. Turn signal neglect increases among male riders, riders not wearing industrial uniforms, solo riders, on weekends, during off-peak hours, during clear weather, on single-lane roads, and on minor road approaches. The findings of this study have significant implications for the development of targeted countermeasures such as education programs and road policing.

ACS Style

Rusdi Rusli; Oscar Oviedo-Trespalacios; Suhaila Azura Abd Salam. Risky riding behaviours among motorcyclists in Malaysia: A roadside survey. Transportation Research Part F: Traffic Psychology and Behaviour 2020, 74, 446 -457.

AMA Style

Rusdi Rusli, Oscar Oviedo-Trespalacios, Suhaila Azura Abd Salam. Risky riding behaviours among motorcyclists in Malaysia: A roadside survey. Transportation Research Part F: Traffic Psychology and Behaviour. 2020; 74 ():446-457.

Chicago/Turabian Style

Rusdi Rusli; Oscar Oviedo-Trespalacios; Suhaila Azura Abd Salam. 2020. "Risky riding behaviours among motorcyclists in Malaysia: A roadside survey." Transportation Research Part F: Traffic Psychology and Behaviour 74, no. : 446-457.