Develop statistical models decision tree and response surface in horizontal pavement signs performance invesigition for traffic safety and discipline improvement

Horizontal signs, including markings, play a vital role in the transportation system; therefore, it seems necessary to study the reaction of drivers to horizontal signs. The purpose of this study is to investigate the reaction of drivers to road markings and their grouping.

In order to group the drivers' reactions to the horizontal signs, traffic data including the speed and percentage of vehicles moving between the lanes were collected from the video recording by the surveillance cameras of the Traffic Control Center and then analyzed by SPSS software and decision tree. It should be noted that the streets in which the withdrawals were carried out were four streets: the 10th of Farvardin, Imam Khomeini, Daneshjoo Boulevard, and Qiyam Street in Yazd.

The results show that the speed of vehicles, the number of vehicles moving between the lanes, and the rate of deviation of vehicles from the center of the lane after creating the lanes than before creating them, has decreased on average by about 4%, increased by 11% and decreased by 81%, respectively; in fact, creating the right lane encourages the driver to slow down and maintain the lane.

According to the results, it can be said that drivers' behavior is affected by the marking of roads, and by creating a proper marking, calming, traffic order and safety in urban thoroughfares can be improved.