Operation Mechanism of Traffic Flow in Join Area of Expressway and On-ramp

Abstract:

Since operation mechanism of traffic flow has not been given enough emphasis to the management and control strategy of on ramp is short of pertinence and maneuverability.Models were built on the basis of the kinematic wave theory to study the operation station and evolvement rule of traffic flow in the join area of expressway and on ramp together with traffic flow of upstream,downstream and ramp under different flow rate.The formation and transmission rule of traffic jam in the join area without any control strategy are also studied.Analysis with actual traffic data shows that the operation mechanism proposed in this paper agrees well with the actual traffic operation in the join area.