Effect analysis of speed guidance on traffic demand and driver compliance

Active traffic management is method of increasing capacity and smoothing traffic flows. As one of the most important methods, speed guidance control could be used to improve operational efficiency and reduce accident rates. This paper aims to consider a variety of factors to determine the best traffic management services. Driver obedience for the speed guidance value affected the effect directly. The effect might also lose even play a negative role when the traffic demand reached a certain level. Simulation was carried out depending on different traffic demand and driver compliance rate through abstract urban expressway model. Six kinds of traffic demand under different obedience level were analysed comparatively. Speed guidance control has the positive effect about safety and efficiency when the traffic demand is low or medium. When the traffic demand is high, the effect on safety and efficiency both are negative, and different driver compliance rate affected the effect level to some extent.