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Dr. Long Truong
La Trobe University

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0 travel behaviour
0 Transport Engineering
0 transport planning
0 intelligent transport systems

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Research article
Published: 12 July 2021 in Journal of Advanced Transportation
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Before shared automated vehicles (SAVs) can be widely adopted, they are anticipated to be implemented commercially in confined regions or fixed routes where the benefits of automation can be realized. SAVs have the potential to operate in a traditional transit corridor, replacing conventional transit vehicles, and have frequent interactions with riders and other vehicles sharing the same right of way. This paper microsimulates SAVs’ operation on a 6.5-mile corridor to understand how vehicle size and attributes of such SAV-based transit affect traffic, transit riders, and system costs. The SUMO (Simulation of Urban MObility) platform is employed to model microscopic interactions among SAVs, transit passengers, and other traffic. Results show that the use of smaller, but more frequent, SAVs leads to reduced passenger waiting times but increased vehicle travel times. More frequent services of smaller SAVs do not, in general, significantly affect general traffic due to shorter dwell times. Overall, using smaller SAVs instead of the large 40-seat SAVs can reduce system costs by up to 4% while also reducing passenger waiting times, under various demand levels and passenger loading factors. However, the use of 5-seat SAVs does not always have the lowest system costs.

ACS Style

Huang Yantao; Kara M. Kockelman; Long T. Truong. SAV Operations on a Bus Line Corridor: Travel Demand, Service Frequency, and Vehicle Size. Journal of Advanced Transportation 2021, 2021, 1 -15.

AMA Style

Huang Yantao, Kara M. Kockelman, Long T. Truong. SAV Operations on a Bus Line Corridor: Travel Demand, Service Frequency, and Vehicle Size. Journal of Advanced Transportation. 2021; 2021 ():1-15.

Chicago/Turabian Style

Huang Yantao; Kara M. Kockelman; Long T. Truong. 2021. "SAV Operations on a Bus Line Corridor: Travel Demand, Service Frequency, and Vehicle Size." Journal of Advanced Transportation 2021, no. : 1-15.

Journal article
Published: 10 March 2021 in Sustainability
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Electric two-wheelers (E2W) can help de-carbonize transport in Indian cities. To promote E2W as an attractive alternative compared to the conventional two-wheelers, an investigation on prospective users’ choice decisions is necessary. This paper proposed a comprehensive methodology to evaluate the prospective users’ choice decision toward electric two-wheelers and related attributes in the Indian context. In this paper, attributes such as Operating Cost (OC) savings, top speed, range, charging duration, acceleration, and purchase cost were considered to design a Stated Preference (SP) survey to collect data from prospective E2W users in Hyderabad, India. Concurrently, multinomial logit (MNL) and random parameter logit (RPL) models are developed, and the willingness-to-pay (WTP) associated with each of the identified attributes was estimated. Additionally, the effect of socio-economic characteristics on prospective users’ choice decision was also assessed. Subsequently, a sensitivity analysis was carried out to estimate the relative influence of the attributes on an individual’s choice decision in terms of the shift in probability to choose alternatives with better attribute levels than the base alternative. The results revealed that top speed was perceived as the most important attribute influencing an individual’s choice decision, followed by acceleration and charging duration. Age, income, and journey time significantly influenced an individual’s perception toward E2W and related attributes in the Indian context.

ACS Style

Mallikarjun Patil; Bandhan Majumdar; Prasanta Sahu; Long Truong. Evaluation of Prospective Users’ Choice Decision toward Electric Two-Wheelers Using a Stated Preference Survey: An Indian Perspective. Sustainability 2021, 13, 3035 .

AMA Style

Mallikarjun Patil, Bandhan Majumdar, Prasanta Sahu, Long Truong. Evaluation of Prospective Users’ Choice Decision toward Electric Two-Wheelers Using a Stated Preference Survey: An Indian Perspective. Sustainability. 2021; 13 (6):3035.

Chicago/Turabian Style

Mallikarjun Patil; Bandhan Majumdar; Prasanta Sahu; Long Truong. 2021. "Evaluation of Prospective Users’ Choice Decision toward Electric Two-Wheelers Using a Stated Preference Survey: An Indian Perspective." Sustainability 13, no. 6: 3035.

Journal article
Published: 09 January 2021 in Journal of Transport & Health
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Motorcycle taxis have been an indispensable component of the transport systems in many cities in the Global South. Motorcycle taxi drivers often work long hours, thus having high exposure to weather conditions, air pollution, and traffic environment. However, little is understood about the health issues among the emerging types of motorcycle taxi drivers, such as ride-hailing and hybrid taxi drivers (i.e. who operates as a traditional and a ride-hailing driver at different time periods). The main objective of this paper is to investigate health issues among motorcycle taxi drivers, using a case study of Hanoi, Vietnam. Survey data of 549 motorcycle taxi drivers were utilised. Factors associated with health issues among motorcycle taxi drivers were investigated using binary logistic regression. About 22.59% (95% Confidence Interval - CI: 19.09–26.08) of the motorcycle taxi drivers reported suffering from fatigue. Low back pain had a slightly lower prevalence of 22.04% (95% CI: 18.57–25.51). Fatigue and low back pain both had significantly higher prevalence when compared to other health issues. Overall, less than half of the drivers (44.44%, 95% CI: 40.29–48.60) indicated they had no health issues. Modelling results showed that ride-hailing and hybrid drivers were less likely to report upper back pain. In addition, overweight, alcohol consumption, and riding duration were found to be associated with certain health issues. It was also found that low back pain and upper back pain were associated with crash involvement. Back pain and fatigue were more prevalent health issues among motorcycle taxi drivers. Associations between motorcycle taxiing and health issues, and then between health issues and crash involvement were evident. It is recommended that authorities should consider required medical checks for motorcycle taxi drivers.

ACS Style

Long T. Truong; Richard Tay; Hang T.T. Nguyen. Investigating health issues of motorcycle taxi drivers: A case study of Vietnam. Journal of Transport & Health 2021, 20, 100999 .

AMA Style

Long T. Truong, Richard Tay, Hang T.T. Nguyen. Investigating health issues of motorcycle taxi drivers: A case study of Vietnam. Journal of Transport & Health. 2021; 20 ():100999.

Chicago/Turabian Style

Long T. Truong; Richard Tay; Hang T.T. Nguyen. 2021. "Investigating health issues of motorcycle taxi drivers: A case study of Vietnam." Journal of Transport & Health 20, no. : 100999.

Journal article
Published: 09 July 2020 in Case Studies on Transport Policy
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Travel plans, also known as transportation demand management (TDM) plans, can be required through the planning approval process for new developments. Where decisions on development applications are appealed, a planning tribunal may review the decision, including the requirement for a travel plan. This research aimed to explore planning tribunal decisions on travel plans for new developments. Using a case study of Victoria, Australia, an analysis of 178 planning tribunal reports from 2005–16 showed that travel plan requirements were accepted in 88% of cases. Larger planning tribunal groups were found to be associated with higher acceptance of travel plan requirements. Travel plan requirements with more prescriptive/tailored wording were over 20 times more likely to be accepted compared to those with generic wording. Recommendations for improving practice include the development of more clearly worded travel plan conditions, provision of training programs and guidelines, and the introduction of supportive planning policy.

ACS Style

Chris De Gruyter; Geoff Rose; Long T. Truong; Kailey Wilson; Zoran Dukanovic. Exploring planning tribunal decisions on travel plans for new developments. Case Studies on Transport Policy 2020, 9, 51 -58.

AMA Style

Chris De Gruyter, Geoff Rose, Long T. Truong, Kailey Wilson, Zoran Dukanovic. Exploring planning tribunal decisions on travel plans for new developments. Case Studies on Transport Policy. 2020; 9 (1):51-58.

Chicago/Turabian Style

Chris De Gruyter; Geoff Rose; Long T. Truong; Kailey Wilson; Zoran Dukanovic. 2020. "Exploring planning tribunal decisions on travel plans for new developments." Case Studies on Transport Policy 9, no. 1: 51-58.

Journal article
Published: 16 June 2020 in Accident Analysis & Prevention
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Since motorcycle taxi drivers often work long hours, fatigue would affect their riding abilities, impacting crash risks. However, there is limited understanding about motorcycle taxi drivers’ fatigue-related crashes. This study investigates self-reported fatigue-related crashes among motorcycle taxi drivers in Hanoi, Vietnam. Results from a survey showed that approximately 16% of the motorcycle taxi drivers reported fatigue-related crash involvement. It was also found that nearly 37% of all crashes reported by motorcycle taxi drivers were related to fatigue while riding a motorcycle taxi. Results of the heterogeneity-in-means random parameter logistic model suggested that working fulltime, more delivery trips, and overweight conditions were associated with increased likelihoods of fatigue-related crash involvement. Hybrid taxi drivers, who operate as either traditional or ride-hailing taxi drivers at different times, and most ride-hailing taxi drivers had a reduced likelihood of fatigue-related crash involvement when compared to traditional taxi drivers. Overall, this study has revealed a significant issue of fatigue-related crashes among motorcycle taxi drivers. Immediate interventions via publicity or educational campaigns should be considered by authorities to address this important issue. Ride-hailing companies should contribute by sending warnings of excessive riding hours to ride-hailing taxi drivers.

ACS Style

Long T. Truong; Hang T.T. Nguyen; Richard Tay. A random parameter logistic model of fatigue-related motorcycle crash involvement in Hanoi, Vietnam. Accident Analysis & Prevention 2020, 144, 105627 .

AMA Style

Long T. Truong, Hang T.T. Nguyen, Richard Tay. A random parameter logistic model of fatigue-related motorcycle crash involvement in Hanoi, Vietnam. Accident Analysis & Prevention. 2020; 144 ():105627.

Chicago/Turabian Style

Long T. Truong; Hang T.T. Nguyen; Richard Tay. 2020. "A random parameter logistic model of fatigue-related motorcycle crash involvement in Hanoi, Vietnam." Accident Analysis & Prevention 144, no. : 105627.

Journal article
Published: 25 February 2020 in Transportation Research Part C: Emerging Technologies
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Customer booking prediction is essential for On-Demand Transport services, especially for those in rural and suburban areas where the demand is low, variable and often regarded as unpredictable. Existing literature tends to focus more on the prediction of demand for traffic, classical public transport, and urban On-Demand Transport service such as taxi, Uber or Lyft, in areas with higher and less variable demand, in which popular time-series prediction methods can be employed. This paper proposes an ensemble learning framework to predict the customer booking behaviour and demand using the observed data of a suburban On-Demand Transport service where data scarcity is a challenge. The proposed method, which is called as Class-specific Soft Voting, is found to be the most accurate prediction method when compared to popular supervised classification methods such as Logistic Regression, Random Forest, Support Vector Machine and other ensemble techniques.

ACS Style

Le-Minh Kieu; Yuming Ou; Long T. Truong; Chen Cai. A class-specific soft voting framework for customer booking prediction in on-demand transport. Transportation Research Part C: Emerging Technologies 2020, 114, 377 -390.

AMA Style

Le-Minh Kieu, Yuming Ou, Long T. Truong, Chen Cai. A class-specific soft voting framework for customer booking prediction in on-demand transport. Transportation Research Part C: Emerging Technologies. 2020; 114 ():377-390.

Chicago/Turabian Style

Le-Minh Kieu; Yuming Ou; Long T. Truong; Chen Cai. 2020. "A class-specific soft voting framework for customer booking prediction in on-demand transport." Transportation Research Part C: Emerging Technologies 114, no. : 377-390.

Journal article
Published: 13 February 2020 in Sustainability
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The relationship between overweight, obesity, or body mass index (BMI) and crashes among drivers of passenger cars, vans, and trucks has been the focus of much research. However, little is understood about this relationship among motorcyclists, particularly motorcycle taxi drivers who tend to work long hours. Motorcycle taxis are an increasingly popular and important mode of travel in many cities, especially in South-East Asia, due partly to the rise of ride-hailing services. This paper assesses the body mass index (BMI) of motorcycle taxi drivers in Vietnam and its impacts on crashes among three types of drivers (traditional, ride-hailing, and hybrid). Data from a structured questionnaire survey of motorcycle taxi drivers conducted in Hanoi, Vietnam were used. Results show that 18.8% of motorcycle taxi drivers were overweight or obese whereas only 1.4% were underweight. Fulltime motorcycle taxi drivers were more likely to be overweight or obese. Results of random effect binary logistic regression show that overweight and obese motorcycle taxi drivers had significantly higher overall and injury crash risks, when compared to normal-weight motorcycle taxi drivers. Results also indicate that hybrid motorcycle taxi drivers had lower overall and injury crash risks when compared to traditional motorcycle taxi drivers.

ACS Style

Long T. Truong; Richard Tay; Hang T.T. Nguyen. Relationships between Body Mass Index and Self-Reported Motorcycle Crashes in Vietnam. Sustainability 2020, 12, 1382 .

AMA Style

Long T. Truong, Richard Tay, Hang T.T. Nguyen. Relationships between Body Mass Index and Self-Reported Motorcycle Crashes in Vietnam. Sustainability. 2020; 12 (4):1382.

Chicago/Turabian Style

Long T. Truong; Richard Tay; Hang T.T. Nguyen. 2020. "Relationships between Body Mass Index and Self-Reported Motorcycle Crashes in Vietnam." Sustainability 12, no. 4: 1382.

Journal article
Published: 26 December 2019 in Journal of Transport Geography
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This paper explores the extent to which high quality public transport can support reduced car parking requirements for new residential apartment buildings. Using a case study of Melbourne, the demand for car parking at residential apartment buildings in proximity to high frequency public transport is assessed, while controlling for a range of socio-demographic, urban design and demand management variables. Key findings indicate that while lower demand for car parking is associated with proximity to high quality public transport, this association is not significant when controlling for other factors that influence car ownership. Public transport service supply within 800 m of residential apartment buildings was instead found to be significant, rather than simple distance to transit. Modelling results suggest an inelastic relationship whereby a 10% increase in public transport service supply is associated with a 0.9–1.2% reduction in car parking demand as measured by levels of car ownership. Notwithstanding broader criticisms of residential off-street parking minimums, the findings have important implications for the development of residential car parking policies, suggesting that city-wide car parking requirements should appropriately reflect the spatial distribution and quality of public transport services.

ACS Style

Chris De Gruyter; Long Truong; Elizabeth Taylor. Can high quality public transport support reduced car parking requirements for new residential apartments? Journal of Transport Geography 2019, 82, 102627 .

AMA Style

Chris De Gruyter, Long Truong, Elizabeth Taylor. Can high quality public transport support reduced car parking requirements for new residential apartments? Journal of Transport Geography. 2019; 82 ():102627.

Chicago/Turabian Style

Chris De Gruyter; Long Truong; Elizabeth Taylor. 2019. "Can high quality public transport support reduced car parking requirements for new residential apartments?" Journal of Transport Geography 82, no. : 102627.

Observational study
Published: 01 October 2019 in Accident Analysis & Prevention
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Pedestrian deaths and injuries are a major health issue in both developed and developing countries. In Vietnam, pedestrians account for about 10-11% of all road traffic deaths, while their travel distance contributes to approximately 2.4% of the total distance travelled by all modes. This paper aims to explore the use of pedestrian overpasses and identify influencing factors, particularly with regards to social and digital distractions, and overpass characteristics. An observational survey was conducted in Hanoi, Vietnam, in March 2017 at ten pedestrian overpasses. Behaviours of 608 pedestrians, including those who used an overpass to cross and those who illegally crossed, were observed. The rates of overpass usage varied significantly, between 35.9% and 96.5%. Modelling results suggest that pedestrians tended to compensate for the risks of illegal crossing by forming group and avoiding digital and social distractions (i.e., calling, operating a mobile phone's screen, listening to music, or talking to other pedestrians while crossing). In addition, overpass usage decreased with taller overpasses, but increased with wider overpasses. Effects of gender, weather, and illegal crossing speed on overpass use were also discussed.

ACS Style

Long T. Truong; Hang T.T. Nguyen; Hien D. Nguyen; Hung V. Vu. Pedestrian overpass use and its relationships with digital and social distractions, and overpass characteristics. Accident Analysis & Prevention 2019, 131, 234 -238.

AMA Style

Long T. Truong, Hang T.T. Nguyen, Hien D. Nguyen, Hung V. Vu. Pedestrian overpass use and its relationships with digital and social distractions, and overpass characteristics. Accident Analysis & Prevention. 2019; 131 ():234-238.

Chicago/Turabian Style

Long T. Truong; Hang T.T. Nguyen; Hien D. Nguyen; Hung V. Vu. 2019. "Pedestrian overpass use and its relationships with digital and social distractions, and overpass characteristics." Accident Analysis & Prevention 131, no. : 234-238.

Journal article
Published: 07 September 2019 in Accident Analysis & Prevention
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In many countries, motorcycle taxis remain an important mode of travel due to their fast, flexible, and inexpensive service. The recent advent of ride-hailing services has led to dramatic growth in the fleet of motorcycle taxis and additional types of motorcycle taxi drivers. Furthermore, mobile phone use while riding a motorcycle is an emerging safety issue, particularly among ride-hailing motorcycle taxi drivers. This paper investigates mobile phone use while riding, crashes and mobile phone related crashes among ride-hailing, traditional, and hybrid motorcycle taxi drivers, using data from a survey in Hanoi, Vietnam. Results show that ride-hailing motorcycle taxi drivers had the highest prevalence of mobile phone use while riding a motorcycle taxi (95.3%), followed by hybrid (88.6%) and traditional taxi drivers (64%). Approximately 32.6%, 19.3%, and 9.7% of motorcycle taxi drivers reported being involved in a crash, injury crash, and mobile phone related crash respectively. Mobile phone related crashes represent 20.5% of all reported crashes. Logistic and negative binomial regression were used to explore factors influencing mobile phone use while riding and crash frequencies. Regression results indicate that ride-hailing taxi drivers were more likely to be involved in a mobile phone related crash. Delivery trips were found to be associated with increases in crashes whereas passenger trips were found to be associated with decreases in crashes. Policy implications are also discussed.

ACS Style

Long T. Truong; Hang T.T. Nguyen. Mobile phone related crashes among motorcycle taxi drivers. Accident Analysis & Prevention 2019, 132, 105288 .

AMA Style

Long T. Truong, Hang T.T. Nguyen. Mobile phone related crashes among motorcycle taxi drivers. Accident Analysis & Prevention. 2019; 132 ():105288.

Chicago/Turabian Style

Long T. Truong; Hang T.T. Nguyen. 2019. "Mobile phone related crashes among motorcycle taxi drivers." Accident Analysis & Prevention 132, no. : 105288.

Journal article
Published: 21 August 2019 in Accident Analysis & Prevention
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Mode shift from private vehicle to public transport is often considered as a potential means of improving road safety, given public transport’s lower fatality rates. However, little research has examined how public transport travel contributes to road safety at a macroscopic level. Further, there is a limited understanding of the individual effects of different public transport modes. This paper explores the effects of commuting by public transport on road safety at a macroscopic level, using Melbourne as a case study. A random effect negative binomial (RENB) and a conditional autoregressive (CAR) model are adopted to explore links between total and severe crash data to commuting mode shares and a range of other zonal explanatory factors. Overall, results show the great potential of public transport as a road safety solution. It is evident that mode shift from private vehicle to public transport (i.e. train, tram, and bus), for commuting would reduce not only total crashes, but also severe crashes. Modelling also demonstrated that CAR models outperform RENB models. In addition, results highlight safety issues related to commuting by motorbike and active transport. Effects of sociodemographic, transport network, and land use factors on crashes at the macroscopic level are also discussed.

ACS Style

Long T. Truong; Graham Currie. Macroscopic road safety impacts of public transport: A case study of Melbourne, Australia. Accident Analysis & Prevention 2019, 132, 105270 .

AMA Style

Long T. Truong, Graham Currie. Macroscopic road safety impacts of public transport: A case study of Melbourne, Australia. Accident Analysis & Prevention. 2019; 132 ():105270.

Chicago/Turabian Style

Long T. Truong; Graham Currie. 2019. "Macroscopic road safety impacts of public transport: A case study of Melbourne, Australia." Accident Analysis & Prevention 132, no. : 105270.

Articles
Published: 17 February 2019 in Traffic Injury Prevention
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Objective: Motorcycle crashes are a significant road safety challenge, particularly in many low- and middle-income countries where motorcycles represent the vast majority of their vehicle fleet. Though risky riding behaviors, such as speeding and riding under the influence of alcohol, have been identified as important contributors to motorcycle crashes, little is understood about the effect of using a mobile phone while riding on motorcycle crash involvement. This article investigates crash involvement among motorcycle riders with risky riding behaviors, particularly using a mobile phone while riding. Methods: Data were obtained from an online survey of university students’ risky riding behaviors in Vietnam administered between March and May 2016 (n = 665). Results: Results show that 40% of motorcycle riders reported to have experienced a crash/fall and nearly 24% of motorcycle riders indicated that they had been injured in a crash/fall. Effects of mobile phone use while riding on safety of motorcycle riders are highlighted. Specifically, more frequent use of a mobile phone for texting or searching for information while riding is associated with a higher chance of being involved in a crash/fall. The results also show that drink riding is associated with a higher chance of being injured. Conclusions: Overall this article reveals significant safety issues of using a mobile phone while riding a motorcycle, providing valuable insight for designing education and publicity campaigns.

ACS Style

Long T. Truong; Hang T. T. Nguyen; Chris De Gruyter. Mobile phone use while riding a motorcycle and crashes among university students. Traffic Injury Prevention 2019, 20, 204 -210.

AMA Style

Long T. Truong, Hang T. T. Nguyen, Chris De Gruyter. Mobile phone use while riding a motorcycle and crashes among university students. Traffic Injury Prevention. 2019; 20 (2):204-210.

Chicago/Turabian Style

Long T. Truong; Hang T. T. Nguyen; Chris De Gruyter. 2019. "Mobile phone use while riding a motorcycle and crashes among university students." Traffic Injury Prevention 20, no. 2: 204-210.

Journal article
Published: 01 September 2018 in Accident Analysis & Prevention
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Motorcyclist safety is a major concern in many developing countries. Understanding motorcycle riders’ risky behaviours, particularly among the younger population, is essential to developing effective interventions. This paper explores the correlations between mobile phone use while riding and other risky riding behaviours as well as the relationships between perceived risks and risky riding behaviours, using an online survey of university students in Vietnam. Results show that calling while riding a motorcycle had the highest prevalence (74%) while reckless overtaking had the lowest prevalence (33.2%). Survey participants who indicated that they had the behaviours of reckless overtaking or riding on sidewalks were around twice as likely to call, text, or search for information while riding. In addition, those who admitted that they rode a motorcycle while under the influence of alcohol were nearly twice as likely to call or text while riding. The results also show that perceived crash risks reduced the likelihood of risky riding behaviours, including calling, texting, searching for information, speeding, running red lights, riding on the wrong side of a road, and riding on sidewalks. A more coordinated approach to enforcement is needed to help reduce the prevalence of multiple risk taking behaviours among motorcyclists.

ACS Style

Long T. Truong; Hang T.T. Nguyen; Chris De Gruyter. Correlations between mobile phone use and other risky behaviours while riding a motorcycle. Accident Analysis & Prevention 2018, 118, 125 -130.

AMA Style

Long T. Truong, Hang T.T. Nguyen, Chris De Gruyter. Correlations between mobile phone use and other risky behaviours while riding a motorcycle. Accident Analysis & Prevention. 2018; 118 ():125-130.

Chicago/Turabian Style

Long T. Truong; Hang T.T. Nguyen; Chris De Gruyter. 2018. "Correlations between mobile phone use and other risky behaviours while riding a motorcycle." Accident Analysis & Prevention 118, no. : 125-130.

Journal article
Published: 01 September 2018 in Research in Transportation Economics
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ACS Style

Graham Currie; Long Truong; Chris De Gruyter. Regulatory structures and their impact on the sustainability performance of public transport in world cities. Research in Transportation Economics 2018, 69, 494 -500.

AMA Style

Graham Currie, Long Truong, Chris De Gruyter. Regulatory structures and their impact on the sustainability performance of public transport in world cities. Research in Transportation Economics. 2018; 69 ():494-500.

Chicago/Turabian Style

Graham Currie; Long Truong; Chris De Gruyter. 2018. "Regulatory structures and their impact on the sustainability performance of public transport in world cities." Research in Transportation Economics 69, no. : 494-500.

Journal article
Published: 22 June 2018 in IEEE Transactions on Intelligent Transportation Systems
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This paper presents an advanced transit signal priority (ATSP) control model that considers bus progression at downstream intersections when giving priority at upstream intersections and stochastic bus arrival times. The ATSP control model is applicable to arterials with bus lanes. At the center of the ATSP control model is a stochastic programming model formulated to find the optimum priority strategies at each intersection of interest, which minimize bus delays while having the least negative impact on general traffic. The uncertainty in bus arrivals is taken into account by considering stochastic bus dwell times. The ATSP control is implemented in a traffic micro-simulation environment and compared with conventional transit signal priority (CTSP) control. Extensive simulation experiments are conducted with different traffic congestion levels, bus headway levels, and dwell-time distributions. Results show that the ATSP control generates an additional reduction in bus delay of around 10% when compared to the CTSP control.

ACS Style

Long Tien Truong; Graham Currie; Mark Wallace; Chris De Gruyter; Kun An. Coordinated Transit Signal Priority Model Considering Stochastic Bus Arrival Time. IEEE Transactions on Intelligent Transportation Systems 2018, 20, 1269 -1277.

AMA Style

Long Tien Truong, Graham Currie, Mark Wallace, Chris De Gruyter, Kun An. Coordinated Transit Signal Priority Model Considering Stochastic Bus Arrival Time. IEEE Transactions on Intelligent Transportation Systems. 2018; 20 (4):1269-1277.

Chicago/Turabian Style

Long Tien Truong; Graham Currie; Mark Wallace; Chris De Gruyter; Kun An. 2018. "Coordinated Transit Signal Priority Model Considering Stochastic Bus Arrival Time." IEEE Transactions on Intelligent Transportation Systems 20, no. 4: 1269-1277.

Research article
Published: 22 April 2018 in Journal of Advanced Transportation
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Autonomous vehicle (AV) technology has advanced rapidly in recent years with some automated features already available in vehicles on the market. AVs are expected to reduce traffic crashes as the majority of crashes are related to driver errors, fatigue, alcohol, or drugs. However, very little research has been conducted to estimate the safety impact of AVs. This paper aims to investigate the safety impacts of AVs using a simulation-based surrogate safety measure approach. To this end, safety impacts are explored through the number of conflicts extracted from the VISSIM traffic microsimulator using the Surrogate Safety Assessment Model (SSAM). Behaviours of human-driven vehicles (HVs) and AVs (level 4 automation) are modelled within the VISSIM’s car-following model. The safety investigation is conducted for two case studies, that is, a signalised intersection and a roundabout, under various AV penetration rates. Results suggest that AVs improve safety significantly with high penetration rates, even when they travel with shorter headways to improve road capacity and reduce delay. For the signalised intersection, AVs reduce the number of conflicts by 20% to 65% with the AV penetration rates of between 50% and 100% (statistically significant at p<0.05). For the roundabout, the number of conflicts is reduced by 29% to 64% with the 100% AV penetration rate (statistically significant at p<0.05).

ACS Style

Mark Mario Morando; Qingyun Tian; Long T. Truong; Hai L. Vu. Studying the Safety Impact of Autonomous Vehicles Using Simulation-Based Surrogate Safety Measures. Journal of Advanced Transportation 2018, 2018, 1 -11.

AMA Style

Mark Mario Morando, Qingyun Tian, Long T. Truong, Hai L. Vu. Studying the Safety Impact of Autonomous Vehicles Using Simulation-Based Surrogate Safety Measures. Journal of Advanced Transportation. 2018; 2018 ():1-11.

Chicago/Turabian Style

Mark Mario Morando; Qingyun Tian; Long T. Truong; Hai L. Vu. 2018. "Studying the Safety Impact of Autonomous Vehicles Using Simulation-Based Surrogate Safety Measures." Journal of Advanced Transportation 2018, no. : 1-11.

Review
Published: 18 April 2018 in Transport Reviews
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ACS Style

Chris De Gruyter; Graham Currie; Long T. Truong; Farhana Naznin. A meta-analysis and synthesis of public transport customer amenity valuation research. Transport Reviews 2018, 39, 261 -283.

AMA Style

Chris De Gruyter, Graham Currie, Long T. Truong, Farhana Naznin. A meta-analysis and synthesis of public transport customer amenity valuation research. Transport Reviews. 2018; 39 (2):261-283.

Chicago/Turabian Style

Chris De Gruyter; Graham Currie; Long T. Truong; Farhana Naznin. 2018. "A meta-analysis and synthesis of public transport customer amenity valuation research." Transport Reviews 39, no. 2: 261-283.

Journal article
Published: 25 October 2017 in IEEE Intelligent Transportation Systems Magazine
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Bus delay reduction is an essential input to the objective evaluation of the performance of Public Transport Priority (PTP) measures. Functions for estimating bus delay reduction associated with various types of PTP measures can be used to optimise priority and signal control, or used as a planning tool when more expensive simulation is not available. However, existing delay functions for evaluating PTP measures, such as Dedicated Bus Lanes (DBLs) or Transit Signal Priority (TSP), tend to ignore delay associated with bus acceleration. Moreover, there is no study dedicated to developing bus delay functions to evaluate the performance of Queue Jump Lanes (QJLs) or QJLs combined with TSP. This paper proposes delay functions to analytically estimate bus delay effects for a range of PTP measures, including DBLs, QJLs, TSP, TSP combined with QJLs, and TSP combined with DBLs. Kinematic Wave Theory (KWT) is used to estimate queuing delays at traffic signals. Delay associated with bus acceleration is also analytically approximated. The proposed bus delay functions are validated using traffic micro-simulation, which indicates that the proposed functions accurately estimate bus delay effects of the considered PTP measures with small errors.

ACS Style

Long T. Truong; Graham Currie; Mark Wallace; Chris De Gruyter. Analytical Approach to Estimate Delay Reduction Associated with Bus Priority Measures. IEEE Intelligent Transportation Systems Magazine 2017, 9, 91 -101.

AMA Style

Long T. Truong, Graham Currie, Mark Wallace, Chris De Gruyter. Analytical Approach to Estimate Delay Reduction Associated with Bus Priority Measures. IEEE Intelligent Transportation Systems Magazine. 2017; 9 (4):91-101.

Chicago/Turabian Style

Long T. Truong; Graham Currie; Mark Wallace; Chris De Gruyter. 2017. "Analytical Approach to Estimate Delay Reduction Associated with Bus Priority Measures." IEEE Intelligent Transportation Systems Magazine 9, no. 4: 91-101.

Article
Published: 17 July 2017 in Transportation
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Autonomous vehicles (AVs) potentially increase vehicle travel by reducing travel and parking costs and by providing improved mobility to those who are too young to drive or older people. The increase in vehicle travel could be generated by both trip diversion from other modes and entirely new trips. Existing studies however tend to overlook AVs’ impacts on entirely new trips. There is a need to develop a methodology for estimating possible impacts of AVs on entirely new trips across all age groups. This paper explores the impacts of AVs on car trips using a case study of Victoria, Australia. A new methodology for estimating entirely new trips associated with AVs is proposed by measuring gaps in travel need at different life stages. Results show that AVs would increase daily trips by 4.14% on average. The 76+ age group would have the largest increase of 18.5%, followed by the 18–24 age group and the 12–17 age group with 14.6 and 11.1% respectively. If car occupancy remains constant in AV scenarios, entirely new trips and trip diversions from public transport and active modes would lead to a 7.31% increase in car trips. However increases in car travel are substantially magnified by reduced car occupancy rates, a trend evidenced throughout the world. Car occupancy would need to increase by at least 5.3–7.3% to keep car trips unchanged in AV scenarios.

ACS Style

Long T. Truong; Chris De Gruyter; Graham Currie; Alexa Delbosc. Estimating the trip generation impacts of autonomous vehicles on car travel in Victoria, Australia. Transportation 2017, 44, 1279 -1292.

AMA Style

Long T. Truong, Chris De Gruyter, Graham Currie, Alexa Delbosc. Estimating the trip generation impacts of autonomous vehicles on car travel in Victoria, Australia. Transportation. 2017; 44 (6):1279-1292.

Chicago/Turabian Style

Long T. Truong; Chris De Gruyter; Graham Currie; Alexa Delbosc. 2017. "Estimating the trip generation impacts of autonomous vehicles on car travel in Victoria, Australia." Transportation 44, no. 6: 1279-1292.

Journal article
Published: 01 June 2017 in Accident Analysis & Prevention
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Mobile phone use while riding a motorcycle poses a key safety risk, particularly among younger people who have been found to be more susceptible to distracted driving. While previous research has examined the influence of social networks on mobile phone use while driving a car, no research has explored this association in the context of motorcycle use. Using a survey of university students in Vietnam, this research explores the association between social networks and mobile phone use among motorcyclists and the links this has to reported crashes/falls. Results show that the majority of students are most likely to use a mobile phone to communicate with a friend while riding, either through talking (56.5%) or text messaging (62.0%). However, respondents who frequently talk to a girlfriend/boyfriend or spouse while riding were more likely to experience a crash/fall than those who frequently talk with others while riding (e.g. parent, brother/sister). In addition, those who frequently text message a friend while riding were more likely to experience a crash/fall than those who frequently text message others while riding. The results highlight a clear association between social networks and mobile phone use while riding a motorcycle. Developing a culture of societal norms, where mobile phone use while riding a motorcycle is considered socially unacceptable, will help to reduce the prevalence and ultimate crash risk associated with mobile phone use while riding.

ACS Style

Chris De Gruyter; Long Truong; Hang T.T. Nguyen. Who’s calling? Social networks and mobile phone use among motorcyclists. Accident Analysis & Prevention 2017, 103, 143 -147.

AMA Style

Chris De Gruyter, Long Truong, Hang T.T. Nguyen. Who’s calling? Social networks and mobile phone use among motorcyclists. Accident Analysis & Prevention. 2017; 103 ():143-147.

Chicago/Turabian Style

Chris De Gruyter; Long Truong; Hang T.T. Nguyen. 2017. "Who’s calling? Social networks and mobile phone use among motorcyclists." Accident Analysis & Prevention 103, no. : 143-147.