A Comparative Study of Driving Behaviors under Different Green-Yellow-Phase-switching Modes in Signalized Intersections

This study is intended to investigate influences of different phase-switching modes at the end of green light on traffic control at signalized intersections in China.Driving simulations are designed to compare and analyze driving behaviors under two typical phase-switching modes-green signal flash(GSF)and green signal countdown(GSC).Moreo-ver,decision behaviors of"passing/stopping"under two modes are developed.The results show that,driving behaviors during phase-switching interval of different modes have complexities,which are closely related to traffic parameters(i.e. driving speed,distance between the vehicle and stop line at the onset of amber light)and personal data of drivers(i.e. sex,age,and driving experience).In terms of traffic parameters,the GSC mode has a strong urging effect on drivers, under which the average passing rate is 10% ~20% higher,and the probability of being caught into dilemma zone is 7. 2% higher than that under the GSF mode.The passing rate is negatively correlated to the distance between the vehicle and stop line at the onset of amber light.The relationship between the passing rate and driving speed at the onset of am-ber light shows opposite trends under different phase-switching modes:positively correlated under the GSC mode,while negatively correlated under the GSF mode.In terms of personal data of drivers,the passing rate of male drivers who are 20~30 years old,and have 3~4 years driving experience is significantly higher than other groups.