Abstract
Recently, simple traffic safety measures such as road markings, warning signs or color pavement which mainly aim to promote drivers’ awareness have been implemented. These measures are inexpensive, thus can relatively easily be implemented. However, the effects on safety are not clear since these measures do not affect driving behavior directory. This study analyzes the effects of the simple traffic safety measures on driving behavior through a before-and-after survey at a signalized intersection where frequent right-turn-straight-run (RTSR) accidents had occurred. It was indicated that the right-turn vehicles tended to follow the intention of the guide of right-turn-start-position after the implementation. Also, by comparing the gap acceptance behavior, the judgment of gap acceptance did not only shift to safe side after the implementation, but also become more efficient long period after the implementation.
