A traffic management with dynamic speed guidance and dynamic signal timing (DSDS) is presented to optimize the arterial coordinated signal control system. Details are discussed including VMS positioning, guided speed calculation, signal timing adjustment and DSDS integration model. This strategy provides the vehicles with a possibility of passing the intersections without stop through guiding them with necessary speed dynamically in the link segment and adjusting the signal timing of the preceding intersection according to vehicle detected data. Thus the stopped delay of traffic flow can be impressively decreased. VISSIM, a microscopic simulator is applied to develop simulation DUFKLWHFWXUHDVDWHVWWRRORIWKLVVWUDWHJ\$VDFDVHVWXG\&DR ¶DQ Highway, a suburban highway in Shanghai, is taken for simulation and evaluation. The preliminary assessment results show that: the improvement of the delay and number of stops is obvious and robust considering the driver behavior.

Factors of suburban highway, such as oversized signalized intersection spacing, complex traffic composition, abundant exits and entrances along the artery, and low traffic demand always undermine the effectiveness of signal coordination. In order to decrease delay and number of stops on suburban highway, on the basis of bidirectional communication between vehicles and infrastructures in VII system, this paper proposes spatial and temporal trajectories and referred signal timing parameters. A microscopic traffic simulator, VISSIM, is applied to develop simulation architecture for evaluating speed guidance strategy. Shanghai is taken as evaluation base for the preliminary assessment of the strategy operation capability and efficiency. The results show that, compared to fixed signal coordination, average delay and number of stops are decreased by about 29%.

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