China Safety Science Journal ›› 2020, Vol. 30 ›› Issue (8): 122-128.doi: 10.16265/j.cnki.issn1003-3033.2020.08.018

• Public safety • Previous Articles     Next Articles

Research on information volume of guidance facilities on bends based on gaze entropy and Markov chain

HAN Lei, ZHU Shoulin, GAO Mingxing, LI Hangtian, LIU Xin   

  1. College of Energy and Traffic Engineering, Inner Mongolia Agriculture University, Hohhot Inner Mongolia 010018, China
  • Received:2020-05-01 Revised:2020-07-12 Online:2020-08-28 Published:2021-07-15

Abstract: In order to study drivers' attention distribution while driving on bends of grassland highways with different guidance facilities information volume, five virtual scenes of bends with diverse levels of information volume (Q0, Q1, Q2, Q3, Q4) were established, and driving simulation experiments were carried out. Then, drivers' visual fields were divided, and their gaze entropy changes under different volume conditions were analyzed. Finally, Markov chain was used to calculate one-step transfer probability and stable distribution probability of gaze in different regions. The results show that information volume change of guidance facilities on grassland highway bends has a significant impact on drivers' gaze entropy which would be the largest under Q2 condition(10-20 bits/km). They need to repeatedly gaze at target to obtain sufficient and effective driving information, and more than 90% of probability is concentrated in left and far areas of roads, of which the latter one is an significant zone for drivers to ensure normal driving.

Key words: fixation entropy, Markov chain, guidance facilities, information volume, grassland highway

CLC Number: