Analysis of traffic conflicts with right-turning vehicles at unsignalized intersections in suburban areas  

作　　者：Abbas Sheykhfard Farshidreza Haghighi Sarah Bakhtiari Sara Moridpour Kun Xie Grigorios Fountas 

机构地区：[1]Department of Civil Engineering,Babol Noshirvani University of Technology,Shariati Ave.,Babol,Mazandaran,Iran [2]Department of Mechanical and Industrial Engineering,219 Engineering Laboratory,University of Massachusetts,160 Governors Drive,Amherst,MA 01003,USA [3]School of Engineering,RMIT University,Melbourne,Australia 124 La Trobe St,Melbourne,VIC 3000,Australia [4]Department of Civil and Environmental Engineering,Old Dominion University,4635 Hampton Boulevard,Norfolk,VA 23529,USA [5]School of Rural and Surveying Engineering,Aristotle University of Thessaloniki,Thessaloniki 54124,Greece

出　　处：《International Journal of Transportation Science and Technology》2024年第4期34-49,共16页交通科学与技术(英文)

摘　　要：Right-turn collisions at intersections are one of the most dominant crash types in suburban areas,especially at unsignalized intersections.There is,however,a lack of comprehensive research on the speed patterns of vehicles during right-turn manoeuvres and their impacts on crashes.To provide an in-depth investigation of the factors determining the safety of right-turn manoeuvres,driving behavior data were collected through an instrumented vehicle study.Using this data,binary logistic regression models were developed to identify the factors affecting the probability of vehicle-vehicle(V-V)and vehicle-pedestrian(V-P)conflicts at six suburban intersections in Babol,Iran,during right-turn stage manoeuvres.In total,1456 V-V and V-P conflicts were identified from the data analysis.The results from the logistic regression model showed that the vehicle speed,the distance between road users,as well as driver and pedestrian distractions were associated with a higher risk for V-V or V-P conflicts.To estimate the safe right-turn speeds to be selected by drivers at different stages of the right turn,i.e.,at the start,during,and end of the movement,linear regression models were developed.The results showed that participants adjust their driving behaviors the same way toward pedestrians as they do toward vehicles.The findings of this study can be leveraged for the development of a robust advanced driving assistance system,the use of which can further improve the safety performance of right-turn manoeuvres.

关 键 词：Traffic conflict Right-turn manoeuvre Unsignalized intersection Suburban area 

分 类 号：U49[交通运输工程—交通运输规划与管理]