Effect of Audio Prompt on Multistage Lane-Changing Behavior in Work Zone Area

Work zone poses great threaten to traffic safety and efficiency. One important reason is the frequent lane-changing behaviors. This study carried out a simulation study to investigate driver’s merging behavior in depth and verify the efficacy of an intelligent in-vehicle audio prompt. Forty-two participants completed the test and both driving behavior and eye movement data were collected. During analysis, a multistage behavioral mechanism model was proposed including perception stage, preparation stage and action stage. The results showed that: (i) Professional drivers had better control over the longitudinal and lateral movement during lane changing; (ii) High traffic density conditions would postpone lane changing and led to aggressive driving behavior. Besides, drivers under high traffic density conditions had less concentration on the road ahead, which might increase the collision risks. (iii) The audio prompt could induce lane changing more in advance and provide more time for lane changing preparation. Moreover, the audio prompt could also reduce drivers’ visit duration in rearview mirror in preparation stage, thus ensuring driving safety. This research can shed some lights on traffic management in work zone areas.