A research of guidance signs adjustment based on naturalistic driving study data

This paper analyzed the naturalistic driving data of speed and eye movement from <i>Xi'an</i> to <i>Yulin</i> to explore the effectiveness of guidance signs at entrances and exits on expressway. Supporters of the natural driving that it is only unfamiliar with the road must to drive through this section of the road to complete their work due to official needs. The current analysis included 20 participants, all of them have work to travel between <i>Xi'an</i> and <i>Yulin</i>, aged among 30-40 who are more likely to using a high speed, and those who owned 3 years or less driving experience is 50%. Results show that when drivers enter or exit the ramp on expressway, the line of sight were focused on the front and the right side, therefore it was effective to set the guidance sign on the right and front side. Datas show that the suitable guidance signs ensuerance drivers to obtain road information accurately and in a timely manner, which is beneficial to drivers cut down frequently change lanes and reduce the risk of traffic. This study provides strong support for the effectiveness of guidance signs on expressway. Matlab 2020b is used to simulate and analyze the evolution model array constructed by driving speed, driving behavior and guidance signs.