Driver behavior centred traffic conflict with pedestrian at signalized intersection crosswalk

To analyze the traffic conflict between vehicles and pedestrians is a surrogate method for pedestrian protection and improving the active driving safety. Field traffic data has been collected by video recording and image processing at a signalized intersection. As basic characteristics describing the driver behavior in conflict process, the vehicle speed, ac-/deceleration and the relationship between vehicle speed and TTC at the onset of braking are statistically analyzed. The frequency distribution of 1/TTC is proved to fit the Weibull II distribution. By understanding how the pedestrian speed and vehicle-to-pedestrian distance affect the driver decision to the deceleration, a sensitive pedestrian speed is proposed for the perceptive-cognitive driver system and the whole work could hopefully be the groundwork in the target of modeling driver behavior under various conflict situations.