Influence of In-Vehicle Real-Time Traffic Safety Warning Information on Driving Stability at Limited Signal Visibility Approaches: Use of an Ordered Probit Model

Some laboratory experiments based on driving simulators have been reported that provision of traffic safety warning at signalized intersection approaches can result in safer driving behavior. To see the influence of the in-vehicle real-time traffic safety warning information on driving stability at signalized intersection approach, a field driving experiment was implemented in Hiroshima city, Japan. This paper presents an ordered probit model to analyze those impacts, and discusses the results of elasticity analysis for relative importance and sensitivity analysis for the probability change in driving stability risk.