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New York City is one of the most traffic-congested cities in the United States and the world. This study presents a comprehensive analysis of the total number of injured and killed people by road crashes in New York City in the period from 2013 to 2019. The purpose of the analysis was to examine the trend of crashes over time and identify the reasons for injuries and fatalities. The numbers of injured and killed road users were analyzed using yearly, seasonally, monthly, daily, and hourly time series. The hours of the day were compared based on four periods: morning peak, evening peak, off-peak, and night-time. The patterns on weekdays were compared to those on weekends. The types of injured and killed road users were analyzed based on different categories; pedestrians, cyclists, and persons (drivers and occupants). A total of 47 reasons for traffic-related crashes involving injuries and fatalities were analyzed comprehensively. A simple ranking method was developed. The top three reasons identified were driver distraction, failure to yield right-of-way, and exceeding the speed limit.
Khaled Shaaban; Mohamed Ibrahim. Analysis and Identification of Contributing Factors of Traffic Crashes in New York City. Transportation Research Procedia 2021, 55, 1696 -1703.
AMA StyleKhaled Shaaban, Mohamed Ibrahim. Analysis and Identification of Contributing Factors of Traffic Crashes in New York City. Transportation Research Procedia. 2021; 55 ():1696-1703.
Chicago/Turabian StyleKhaled Shaaban; Mohamed Ibrahim. 2021. "Analysis and Identification of Contributing Factors of Traffic Crashes in New York City." Transportation Research Procedia 55, no. : 1696-1703.
Qatar is one of the most car-dependent countries in the Middle East, and fewer people use public transportation. The purpose of this study was to investigate the public bus ridership in the country during the period from 2012 to 2016. The relationship between the ridership and population, number of public bus lines, day of the week, and weather conditions were studied. The study revealed no clear relationship between the ridership and the population or the number of bus lines. In some cases, the ridership decreased with the increase of the population and number of lines and vice versa. The public bus ridership increased during the weekends compared to the weekdays. The results also indicated that the ridership greatly decreased during the hot weather of the summer season and increased during the winter season when the weather is pleasant in Qatar.
Khaled Shaaban; Abdalla Siam. Public Transportation Usage in a Hot Climate Developing Country. Transportation Research Procedia 2021, 55, 394 -400.
AMA StyleKhaled Shaaban, Abdalla Siam. Public Transportation Usage in a Hot Climate Developing Country. Transportation Research Procedia. 2021; 55 ():394-400.
Chicago/Turabian StyleKhaled Shaaban; Abdalla Siam. 2021. "Public Transportation Usage in a Hot Climate Developing Country." Transportation Research Procedia 55, no. : 394-400.
Traffic safety is a major public health concern in Qatar, a developing country in the Middle East. The purpose of this study was to investigate the characteristics of traffic violations and crashes in Qatar, identify their trends, and describe the patterns for different demographic groups during the period from 2005 to 2015. The analysis showed that the number of crashes and violations is increasing with the huge increase in population during the same period. On the other hand, the number of fatalities per 100,000 population is decreasing. The main cause of violations was exceeding the speed limit while the main contributing cause of crashes was careless driving. Male drivers, passengers, and pedestrians were more involved in severe crashes compared to other groups. Male drivers between the age of 20 and 29 years had the highest rate of fatalities among all groups. Although significant improvements in road safety were made during recent years and were reflected in the decrease of the number of fatalities per 100,000 population, more efforts are needed to decrease the number of violations and crashes. The data collection process was difficult since it involved multiple public agencies and ministries. This is a common challenge in developing countries. Therefore, it is recommended that public authorities establish a crash database system that includes detailed traffic safety data to fill the gap in the availability of traffic safety data and to provide enough information for the relevant entities to study traffic safety and develop countermeasures.
Khaled Shaaban; Abdalla Siam; Ali Badran. Analysis of Traffic Crashes and Violations in a Developing Country. Transportation Research Procedia 2021, 55, 1689 -1695.
AMA StyleKhaled Shaaban, Abdalla Siam, Ali Badran. Analysis of Traffic Crashes and Violations in a Developing Country. Transportation Research Procedia. 2021; 55 ():1689-1695.
Chicago/Turabian StyleKhaled Shaaban; Abdalla Siam; Ali Badran. 2021. "Analysis of Traffic Crashes and Violations in a Developing Country." Transportation Research Procedia 55, no. : 1689-1695.
In seeking to improve traffic congestion and safety on roads and highways, there has been an increased interest in intelligent transportation systems (ITS). The emerging visible light communication (VLC) technology is a new candidate to enable wireless access in ITS. The purpose of this study is to present a comprehensive review of the current studies related to VLC. Since VLC facilitates illumination and data communication simultaneously, it reduces energy consumption significantly. Additionally, VLC is immune to electromagnetic interference, provides high data security, and utilizes unregulated visible light spectrum, showing promise as a potentially cheaper alternative to existing radio frequency (RF) based technology. Moreover, recent advances in semiconductor materials and solid-state technologies have enabled the development of efficient light-emitting diodes (LEDs) and laser diodes (LDs) which are used as transmitters in a VLC system. Although 10 s of Gbits/s data rate has been demonstrated in indoor VLC links, successful implementation of it in outdoor environments requires further research to overcome the challenges presented by environmental factors, unwanted lights, non-line of sight communication, directional radiation pattern, frequent fragmentation, and so on. Besides, in recent years, semiconductor LDs have been garnering more attention since they can transmit more data over longer distances due to their high quantum efficiency and modulation bandwidth compared to LEDs. As a result, urban planners, policy-makers, transportation engineers, and vehicle manufacturers are recommended to focus on LD-based VLC to facilitate vehicle-to-vehicle and vehicle-to-infrastructure communication. Thus, this paper reviews the most recent developments in VLC technologies, identifies its benefits and potential use in ITS applications, discusses the probable barriers for its implementation in our existing transportation infrastructure, and suggests future research directions and recommendations to overcome its challenges.
Khaled Shaaban; Hosne Mobarok Shamim; Khadija Abdur-Rouf. Visible light communication for intelligent transportation systems: A review of the latest technologies. Journal of Traffic and Transportation Engineering (English Edition) 2021, 8, 483 -492.
AMA StyleKhaled Shaaban, Hosne Mobarok Shamim, Khadija Abdur-Rouf. Visible light communication for intelligent transportation systems: A review of the latest technologies. Journal of Traffic and Transportation Engineering (English Edition). 2021; 8 (4):483-492.
Chicago/Turabian StyleKhaled Shaaban; Hosne Mobarok Shamim; Khadija Abdur-Rouf. 2021. "Visible light communication for intelligent transportation systems: A review of the latest technologies." Journal of Traffic and Transportation Engineering (English Edition) 8, no. 4: 483-492.
Qatar, a developing country in the Middle East, is investing in developing its first smart city. Lusail City is a world-class urban development city that has been newly introduced in Qatar to serve the country’s national vision, support rapid population growth, improve the quality of life for its citizens, and showcase the capabilities of the country to the rest of the world. The city incorporates a smart transportation system that includes a smart road network, light rail transit, bicycle and pedestrian network, parking facilities, water taxi transportation, and electric vehicle charging stations. This paper describes the smart transportation system in the city, challenges facing the system, and lessons that can benefit other developing countries in building similar systems.
Khaled Shaaban; Mohamed Ahmed Adalbi. Smart City Transportation System in Developing Countries: The Case of Lusail City, Qatar. Inventive Computation and Information Technologies 2021, 445 -452.
AMA StyleKhaled Shaaban, Mohamed Ahmed Adalbi. Smart City Transportation System in Developing Countries: The Case of Lusail City, Qatar. Inventive Computation and Information Technologies. 2021; ():445-452.
Chicago/Turabian StyleKhaled Shaaban; Mohamed Ahmed Adalbi. 2021. "Smart City Transportation System in Developing Countries: The Case of Lusail City, Qatar." Inventive Computation and Information Technologies , no. : 445-452.
Inversions occur due to a complex system of energy exchange, geography, and weather patterns. Every winter in the Wasatch Front, Utah, air inversion traps air pollution from different sources causing nearly 2,000 premature deaths each year. The population in this region continues to grow and is predicted to double in the next thirty years. With a fast-growing population being forced to live in the relatively small space that the Wasatch Front region offers, managing the effects of the inversion becomes an important issue to be solved. One of the main sources of this pollution is emissions from vehicles. As the population grows, emissions being trapped by the inversion grow proportionally. The purpose of this paper is to discuss the impact of winter inversion, the role of road transportation, and possible solutions to this problem. Several solutions were proposed, including increasing electric vehicle infrastructure, raising public awareness of air pollution and health threats, encouraging public transportation use, expanding telework programs, and promoting walking and cycling.
Khaled Shaaban; Ian Horrocks. Poor Air Quality Along the Wasatch Front During Inversions: Role of Road Transportation and Possible Solutions. Inventive Computation and Information Technologies 2021, 422 -428.
AMA StyleKhaled Shaaban, Ian Horrocks. Poor Air Quality Along the Wasatch Front During Inversions: Role of Road Transportation and Possible Solutions. Inventive Computation and Information Technologies. 2021; ():422-428.
Chicago/Turabian StyleKhaled Shaaban; Ian Horrocks. 2021. "Poor Air Quality Along the Wasatch Front During Inversions: Role of Road Transportation and Possible Solutions." Inventive Computation and Information Technologies , no. : 422-428.
The satisfaction of road users is one of the main goals of any highway authority. This study evaluates and identifies factors that affect users' satisfaction with the road network. A questionnaire was used to collect the data in this study. The survey questions were categorized into four latent variables through exploratory factor analysis and confirmatory factor analysis: road conditions with respect to drive, safety management, road conditions while ongoing construction, and road user satisfaction. Structural equation modeling was used to explore the satisfaction of users while accounting for latent constructs affecting their behavior. The results showed that factors related to safety management and policies regarding construction activities were significantly related to users’ satisfaction. These findings indicate that as long as traffic safety and disruptions are managed appropriately, road users are satisfied with their driving experience. Several strategies were recommended to improve these factors. The method described in the study can provide highway authorities and public agencies with a useful guideline to identify factors that affect road users’ satisfaction.
Khaled Shaaban; Kiran Shakeel; Taha Hossein Rashidi; Inhi Kim. Measuring users’ satisfaction of the road network using structural equation modeling. International Journal of Sustainable Transportation 2021, 1 -12.
AMA StyleKhaled Shaaban, Kiran Shakeel, Taha Hossein Rashidi, Inhi Kim. Measuring users’ satisfaction of the road network using structural equation modeling. International Journal of Sustainable Transportation. 2021; ():1-12.
Chicago/Turabian StyleKhaled Shaaban; Kiran Shakeel; Taha Hossein Rashidi; Inhi Kim. 2021. "Measuring users’ satisfaction of the road network using structural equation modeling." International Journal of Sustainable Transportation , no. : 1-12.
Background: An acceptable level of knowledge of traffic rules is needed for any driver to drive on public roads. This knowledge is typically acquired at a younger age during the process of attaining a driver's license. Aim: The purpose of this study is to investigate the level of knowledge among young drivers and how it could be improved. The study also explores the relationships between driving experience and knowledge scores as well as between driving training and knowledge scores for young drivers. Methods: A questionnaire survey that covered questions related to traffic law, fines, demerit points, traffic signs, and different driving situations was conducted among young drivers to assess their knowledge level. In addition to the different demographic questions, the survey included questions related to their licensing-related training and driving experience. Results: The participants revealed an acceptable level of knowledge in general, measured in terms of the percentage of correct responses. The participants showed an above-average level of knowledge of traffic signs, an acceptable level of knowledge in questions related to handling different driving situations, but they lacked knowledge of questions related to fines and demerit points. Drivers who attended a driving course before obtaining their driver's license performed better than drivers who did not. Similarly, drivers with more driving experience performed better than drivers with less experience. Conclusion: In summary, the results suggest that providing driving courses and acquiring driving experience are relevant to the acquisition of driving knowledge for young drivers.
Khaled Shaaban. Impact of Experience and Training on Traffic Knowledge of Young Drivers. The Open Transportation Journal 2021, 15, 61 -68.
AMA StyleKhaled Shaaban. Impact of Experience and Training on Traffic Knowledge of Young Drivers. The Open Transportation Journal. 2021; 15 (1):61-68.
Chicago/Turabian StyleKhaled Shaaban. 2021. "Impact of Experience and Training on Traffic Knowledge of Young Drivers." The Open Transportation Journal 15, no. 1: 61-68.
Roundabouts are becoming increasingly common around the world. They depend on the geometry of the approach lanes and center island to slow down and manage traffic rather than to restrict drivers from running a red light or not stopping at an intersection. In countries with right-hand traffic, vehicles inside the roundabout flow in the counter-clock direction and all turns when entering or leaving a roundabout are right turns. Generally, roundabouts are less expensive to build and maintain but typically require more right-of-way than signalized intersections. Mostly, roundabouts have better safety performance than other types of intersections by reducing potential conflict points, eliminating some type of crashes, reducing all speeds and especially relative speed of conflicting movements. Different types of roundabouts are widely used in different countries. The most common type is in the United States often referred to as the modern roundabout. However, other schemes of roundabouts with innovative layouts such as the turbo and flower roundabouts have been proposed and are currently operating in many countries. This article illustrates the advantages and disadvantages of different types of roundabouts from design and safety perspectives. This article also discusses the different types of bicycle and pedestrian safety treatments at roundabouts.
Khaled Shaaban. Safety of Roundabouts. International Encyclopedia of Transportation 2021, 539 -548.
AMA StyleKhaled Shaaban. Safety of Roundabouts. International Encyclopedia of Transportation. 2021; ():539-548.
Chicago/Turabian StyleKhaled Shaaban. 2021. "Safety of Roundabouts." International Encyclopedia of Transportation , no. : 539-548.
Pedestrians being the most vulnerable road users account for a large proportion of injuries and fatalities from road traffic crashes. Pedestrians are involved in around one-third of the whole fatalities coming from the road traffic crashes in the state of Qatar. In areas with uncontrolled midblock crosswalks, it is very crucial to improve drivers’ alertness and yielding behavior. The objective of this driving simulator study is to investigate the impact of pedestrian detection strategies and pavement markings on driving behavior at high-speed uncontrolled crosswalks. To this end, an untreated condition (i.e. Control) was compared with three treatment conditions. The three treated conditions included two detection strategies, i.e., advance variable message sign (VMS) and LED lights, and road markings with pedestrian encircled. Each condition was tested with a yield/stop controlled marked crosswalk for two situations, i.e. with vs. without a pedestrian present. The experiment was conducted using the driving simulator at Qatar University. In total, 67 volunteers possessing a valid Qatari driving license participated in the study. Different analyses were conducted on vehicle-pedestrian interactions, driving speed, variations in acceleration/deceleration and lateral position. The results showed that both the LED and VMS conditions were helpful in increasing yielding rates up to 98.4 % and reducing the vehicle-pedestrian conflicts significantly. Furthermore, both treatments were effective in motivating drivers to reduce vehicle speed in advance. Considering the findings of this study, we recommend LED and VMS conditions as potentially effective solutions to improve safety at yield/stop controlled crosswalks.
Qinaat Hussain; Wael K.M. Alhajyaseen; Ali Pirdavani; Kris Brijs; Khaled Shaaban; Tom Brijs. Do detection-based warning strategies improve vehicle yielding behavior at uncontrolled midblock crosswalks? Accident Analysis & Prevention 2021, 157, 106166 .
AMA StyleQinaat Hussain, Wael K.M. Alhajyaseen, Ali Pirdavani, Kris Brijs, Khaled Shaaban, Tom Brijs. Do detection-based warning strategies improve vehicle yielding behavior at uncontrolled midblock crosswalks? Accident Analysis & Prevention. 2021; 157 ():106166.
Chicago/Turabian StyleQinaat Hussain; Wael K.M. Alhajyaseen; Ali Pirdavani; Kris Brijs; Khaled Shaaban; Tom Brijs. 2021. "Do detection-based warning strategies improve vehicle yielding behavior at uncontrolled midblock crosswalks?" Accident Analysis & Prevention 157, no. : 106166.
Students use different modes of transport to go to college. While many transportation programs exist at different universities and many experts find these programs to have a positive impact, no studies have investigated the impact of such programs on the absenteeism and academic performance of college students. The main purpose of this study is to investigate the impact of a college provided transportation program on the absenteeism and performance of engineering students. Different types of data were collected from a sample of engineering students, including attendance records, grade point average (GPA), course grades, majors, and bus ridership information for two years. The findings suggest that there is a positive impact of providing a college transportation service to engineering students in the form of better attendance and higher GPA. The outcomes of this study can be used to evaluate similar programs in the future and can be used by public agencies and policymakers to make decisions on expanding investments in such programs.
Khaled Shaaban; Ranya Reda. Impact of College Provided Transportation on the Absenteeism and Academic Performance of Engineering Students. Eurasia Journal of Mathematics, Science and Technology Education 2021, 17, em1944 .
AMA StyleKhaled Shaaban, Ranya Reda. Impact of College Provided Transportation on the Absenteeism and Academic Performance of Engineering Students. Eurasia Journal of Mathematics, Science and Technology Education. 2021; 17 (3):em1944.
Chicago/Turabian StyleKhaled Shaaban; Ranya Reda. 2021. "Impact of College Provided Transportation on the Absenteeism and Academic Performance of Engineering Students." Eurasia Journal of Mathematics, Science and Technology Education 17, no. 3: em1944.
To encourage students to walk and cycle to school and ensure their health and safety, it is essential to provide safe and operationally efficient infrastructure around schools. This study used an audit tool to assess the infrastructure and environment around schools in the city of Doha, Qatar, with a particular emphasis on active transport (walking and cycling). The aim was to identify strengths, weaknesses, and areas for improvement. Twenty-two schools with varied education levels were assessed. Among all assessed categories, active transport items scored the lowest, requiring the most improvements. A detailed analysis was conducted based on school type (elementary, primary, high, and mixed-schools) and revealed similar results except for elementary schools (scored acceptable for active transport). The study revealed that adding bike lanes, installing bicycle parking, and providing good separation of travel modes are the most needed improvements at school sites. In summary, improving active transport could significantly improve the overall quality of the infrastructure around schools in Qatar. Such improvements could greatly encourage more school children to walk and cycle to school instead of being primarily dropped-off and picked up by their parents’ vehicles or school buses.
Khaled Shaaban; Khadija Abdur-Rouf. Assessing Walking and Cycling around Schools. Sustainability 2020, 12, 10607 .
AMA StyleKhaled Shaaban, Khadija Abdur-Rouf. Assessing Walking and Cycling around Schools. Sustainability. 2020; 12 (24):10607.
Chicago/Turabian StyleKhaled Shaaban; Khadija Abdur-Rouf. 2020. "Assessing Walking and Cycling around Schools." Sustainability 12, no. 24: 10607.
Statistical models for measuring the impact of adverse weather conditions on pedestrian injuries are of great importance for enhancing road safety measures. The development of these models in the presence of high collinearity among the weather conditions poses a real challenge in practice. The collinearity among these conditions may result in underestimation of the regression coefficients of the regression model, and hence inconsistency regarding the impact of the weather conditions on the pedestrian injuries counts. This paper presents a methodology through which the penalization-based regression is applied to model the impact of weather conditions on pedestrian injury in the presence of a high level of collinearity among these conditions. More specifically, the methodology integrates both the least absolute shrinkage squared operator (Lasso) with the cross-validation approach. The statistical performance of the proposed methodology is assessed through an analytical comparison involving the standard Poisson regression, Poisson generalized linear model (Poisson-GzLM), and Ridge penalized regression model. The mean squared error (MSE) was used as a criterion of comparison. In terms of the MSE, the Lasso-based Poisson generalized linear model (Lasso-GzLM) revealed an advantage over the other regression models. Moreover, the study revealed that weather conditions involved in this study are of insignificant impact on pedestrian injury counts.
Galal M. Abdella; Khaled Shaaban. Modeling the Impact of Weather Conditions on Pedestrian Injury Counts Using LASSO-Based Poisson Model. Arabian Journal for Science and Engineering 2020, 46, 4719 -4730.
AMA StyleGalal M. Abdella, Khaled Shaaban. Modeling the Impact of Weather Conditions on Pedestrian Injury Counts Using LASSO-Based Poisson Model. Arabian Journal for Science and Engineering. 2020; 46 (5):4719-4730.
Chicago/Turabian StyleGalal M. Abdella; Khaled Shaaban. 2020. "Modeling the Impact of Weather Conditions on Pedestrian Injury Counts Using LASSO-Based Poisson Model." Arabian Journal for Science and Engineering 46, no. 5: 4719-4730.
Crossing a road outside of a crosswalk is a major cause of pedestrian fatalities. The aim of this study was to investigate this type of behavior for different pedestrian attributes in terms of risk and gap acceptance using agent-based modeling techniques. An agent-based model was developed and tested to represent pedestrian behavior in different situations. Different pedestrian attributes were analyzed, including gender, age, type of clothing, carrying bags, using mobile phones, and crossing in a group. The results showed that pedestrians add a positive risk factor to the speed of approaching vehicles before evaluating a gap, then proceed with the crossing decision. The factor for the female pedestrians was smaller in comparison to their male counterparts, which may infer that they are more prone to taking risks during crossing compared to male pedestrians. Another interpretation can be that they have a better ability to discern vehicle speeds and thus a better assessment of the critical gap. Compared to pedestrians crossing individually, the factor was smaller for pedestrians crossing in a group, which can be an indication that pedestrians have a higher sense of safety when crossing as a group. Moreover, the analysis suggested that there is no difference in perception between old and middle-age pedestrians, pedestrians carrying bags or not, and pedestrians using a mobile phone while crossing or not. These results can be useful in evaluating pedestrian safety at midblock crossings and providing a framework for modeling this type of behavior in simulation models.
Khaled Shaaban; Karim Abdelwarith. Pedestrian Attribute Analysis Using Agent-Based Modeling. Applied Sciences 2020, 10, 4882 .
AMA StyleKhaled Shaaban, Karim Abdelwarith. Pedestrian Attribute Analysis Using Agent-Based Modeling. Applied Sciences. 2020; 10 (14):4882.
Chicago/Turabian StyleKhaled Shaaban; Karim Abdelwarith. 2020. "Pedestrian Attribute Analysis Using Agent-Based Modeling." Applied Sciences 10, no. 14: 4882.
Distracted driving has been considered one of the main reasons for traffic crashes in recent times, especially among young drivers. The objectives of this study were to identify the distracting activities in which young drivers engage, assess the most distracting ones based on their experiences, and investigate the factors that might increase crash risk. The data were collected through a self-report questionnaire. Most participants reported frequent cell phone use while driving. Other reported activities include adjusting audio devices, chatting with passengers, smoking, eating, and drinking. A structural equation model was constructed to identify the latent variables that have a significant influence on crash risk. The analysis showed that in-vehicle distractions had a high effect on the crash likelihood. The results also indicated that dangerous driving behavior had a direct effect on the crash risk probability, as well as on the rash driving latent variables. The results provide insight into distracted driving behavior among young drivers and can be useful in developing enforcement and educational strategies to reduce this type of behavior.
Khaled Shaaban; Sherif Gaweesh; Mohamed M. Ahmed. Investigating in-vehicle distracting activities and crash risks for young drivers using structural equation modeling. PLoS ONE 2020, 15, e0235325 .
AMA StyleKhaled Shaaban, Sherif Gaweesh, Mohamed M. Ahmed. Investigating in-vehicle distracting activities and crash risks for young drivers using structural equation modeling. PLoS ONE. 2020; 15 (7):e0235325.
Chicago/Turabian StyleKhaled Shaaban; Sherif Gaweesh; Mohamed M. Ahmed. 2020. "Investigating in-vehicle distracting activities and crash risks for young drivers using structural equation modeling." PLoS ONE 15, no. 7: e0235325.
A critical gap value of a roundabout is mainly affected by the interactions between the circulating vehicles and vehicles entering the roundabout. These interactions are impacted by many factors, including the number of circulating lanes, the aggressiveness of local drivers, vehicle types, and the number of approaching lanes. Therefore, it is essential to locally investigate critical gap values before conducting any studies to improve capacity and delay at roundabouts. The purpose of this study is to measure and compare the critical gap values for different types of roundabouts in Qatar. More than 10,000 measurements were collected. The results showed that the critical gap values were 2.24 s, 2.55 s, and 2.40 s for the one-, two-, and three-lane roundabouts, respectively. These values are also quite low when compared to values calculated in other countries, which can be an indication of driver aggressiveness and risky behavior. The study is one of the first efforts to compare three types of roundabouts and to understand the difference in operation between them in this region. The results of this study can help engineers, planners, and public agencies to plan, study, and design similar facilities.
Khaled Shaaban; Hassan Hamad. Critical Gap Comparison between One-, Two-, and Three-Lane Roundabouts in Qatar. Sustainability 2020, 12, 4232 .
AMA StyleKhaled Shaaban, Hassan Hamad. Critical Gap Comparison between One-, Two-, and Three-Lane Roundabouts in Qatar. Sustainability. 2020; 12 (10):4232.
Chicago/Turabian StyleKhaled Shaaban; Hassan Hamad. 2020. "Critical Gap Comparison between One-, Two-, and Three-Lane Roundabouts in Qatar." Sustainability 12, no. 10: 4232.
Although cycling is increasing in developed regions, such as Europe and North America, high-income developing countries in the Arabian Gulf region still have low cycling activities. Limited research has investigated the barriers to cycling in these countries. In this study, the barriers and motivators in Qatar, a high-income developing country, were investigated. Respondents were asked to report their bicycle usage during the last 12 months. The results indicated that approximately 15% used a bicycle during this period, but only 1.7% bicycled for transportation purposes. The analysis revealed the different barriers to cycling and their relative strengths. The study also compared the perceived challenges of cycling between males and females. The questionnaire results indicated that both groups considered the issues related to the weather conditions, bicycle ownership, lack of paths or connections, and driver behavior as important barriers to cycling. However, the female participants identified clothing, parental consent, and cultural and societal pressure as far more important. When asked about motivators for cycling, the results revealed that improving intersections, adding additional infrastructure facilities, planting trees for shading, affordable bicycles, and campaigns targeting potential cyclists and drivers are needed in order to increase cycling. To better understand how bike-sharing will be perceived if implemented in the future, the feedback was obtained from the participants, and their opinions indicated that there is a great deal of acceptance for this type of service. The outcome of this study can be of benefit to public agencies in developing countries that have the goal of increasing cycling use among their populations.
Khaled Shaaban. Why Don’t People Ride Bicycles in High-Income Developing Countries, and Can Bike-Sharing Be the Solution? The Case of Qatar. Sustainability 2020, 12, 1693 .
AMA StyleKhaled Shaaban. Why Don’t People Ride Bicycles in High-Income Developing Countries, and Can Bike-Sharing Be the Solution? The Case of Qatar. Sustainability. 2020; 12 (4):1693.
Chicago/Turabian StyleKhaled Shaaban. 2020. "Why Don’t People Ride Bicycles in High-Income Developing Countries, and Can Bike-Sharing Be the Solution? The Case of Qatar." Sustainability 12, no. 4: 1693.
With the growing number of vehicles utilizing roads in the city of Doha, Qatar, most intersections, particularly multilane roundabouts, have been facing traffic congestion dilemma, where traffic demand exceeds capacity. A new design for multilane roundabouts, known as a rotor turbo roundabout, was considered as an alternative to an existing highly congested multilane roundabout. The new design features spiral roadway markings and raised lane dividers which prevent maneuvering within the roundabout and eliminate cutting-offs and weavings. This design has achieved high capacity and low delay in many European countries. In this study, a traffic simulation program, VISSIM, is used to model the complex traffic operation of both the existing and proposed multilane roundabouts and to replicate the high traffic conditions and aggressive driving behavior prevalent among the Middle East countries. Three different rotor designs were examined in an attempt to have a valid comparison between the two types of roundabouts and to adhere to the standard design of the rotor roundabout without violating its essential features. The proposed designs performed slightly better on the minor approaches and managed to deliver an overall improved LOS compared to the conventional design. Major approaches, however, exhibited an increase in vehicle delay and queue lengths. The results showed that the capacity of the conventional three-lane roundabout was always superior to the capacity of the rotor roundabouts. It was concluded that rotor roundabouts may not be suitable for intersections with high demand volumes exceeding 4500 vehicles per hour, and whenever the traffic flow condition is oversaturated.
Zuhair Elhassy; Hatem Abou-Senna; Khaled Shaaban; Essam Radwan. The Implications of Converting a High-Volume Multilane Roundabout into a Turbo Roundabout. Journal of Advanced Transportation 2020, 2020, 1 -12.
AMA StyleZuhair Elhassy, Hatem Abou-Senna, Khaled Shaaban, Essam Radwan. The Implications of Converting a High-Volume Multilane Roundabout into a Turbo Roundabout. Journal of Advanced Transportation. 2020; 2020 ():1-12.
Chicago/Turabian StyleZuhair Elhassy; Hatem Abou-Senna; Khaled Shaaban; Essam Radwan. 2020. "The Implications of Converting a High-Volume Multilane Roundabout into a Turbo Roundabout." Journal of Advanced Transportation 2020, no. : 1-12.
There is a need for a reliable school audit tool with well-defined scales to convert qualitative evaluation of existing school sites into a quantitative assessment in order to help public agencies to improve schools’ safety and efficiency. In this study, a new, simple, and versatile School Audit Tool (SAT) was developed and tested. SAT was formed using a 30-item checklist categorized into four domains: school site assessment, road network assessment, parking/loading assessment, and active transport assessment. The tool was applied on a sample of 22 schools. Then, categorical and item-by-item Intraclass Correlation Coefficients (ICC) were calculated to validate the tool. The results showed acceptable overall test-retest (ICC = 0.919) and inter-rater reliability (ICC = 0.843) across all items and domains. SAT’s adaptable framework to assess and compare the safety and efficiency of schools is reliable, easy-to-use, and comprehensive. The tool is also effective in ranking schools and identifying items that may require upgrades or modifications.
Khaled Shaaban; Khadija Abdur-Rouf. Development, Validation, and Application of School Audit Tool (SAT): An Effective Instrument for Assessing Traffic Safety and Operation around Schools. Sustainability 2019, 11, 6438 .
AMA StyleKhaled Shaaban, Khadija Abdur-Rouf. Development, Validation, and Application of School Audit Tool (SAT): An Effective Instrument for Assessing Traffic Safety and Operation around Schools. Sustainability. 2019; 11 (22):6438.
Chicago/Turabian StyleKhaled Shaaban; Khadija Abdur-Rouf. 2019. "Development, Validation, and Application of School Audit Tool (SAT): An Effective Instrument for Assessing Traffic Safety and Operation around Schools." Sustainability 11, no. 22: 6438.
Public transportation systems play a major role in accommodating public travel needs. To accommodate the need for public transportation in Qatar, a metro network is currently under construction. However, commuters have different attitudes and beliefs about whether or not public transportation can fulfill their travel needs. To investigate the expected use of the future metro service once it becomes available, a self-reported questionnaire survey was conducted in the city of Doha. The theory of planned behavior was used to predict the intentions of residents of Qatar to use the forthcoming metro system, based on their held attitudes, perceived norms, and sense of control. The results showed that the factors predicting the intention to use the metro differ according to the purpose of the trip; work versus leisure. The perceived behavioral control was found to be important for residents considering to use the metro for work but not for leisure. These results also indicated that when residents feel that they will be able to use the metro, then they will more likely use it for work. The subjective norms were found to be an important factor influencing the use of the metro but only for leisure and not for work. This means that the use of the metro for leisure is dictated by whether other people close to the participants think it is appropriate or not for them to use the metro for leisure. The results can offer valuable insights for public agencies and policymakers in Qatar and other similar countries in the region.
Khaled Shaaban; Amro Maher. Using the theory of planned behavior to predict the use of an upcoming public transportation service in Qatar. Case Studies on Transport Policy 2019, 8, 484 -491.
AMA StyleKhaled Shaaban, Amro Maher. Using the theory of planned behavior to predict the use of an upcoming public transportation service in Qatar. Case Studies on Transport Policy. 2019; 8 (2):484-491.
Chicago/Turabian StyleKhaled Shaaban; Amro Maher. 2019. "Using the theory of planned behavior to predict the use of an upcoming public transportation service in Qatar." Case Studies on Transport Policy 8, no. 2: 484-491.