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HEURISTIC METHOD FOR OPTIMAL DIVERSION CONTROL IN FREEWAY CORRIDORS.
| 题名： | HEURISTIC METHOD FOR OPTIMAL DIVERSION CONTROL IN FREEWAY CORRIDORS. |
| 作者： | Wu-J; Chang-G-L |
| 关键词： | ALGORITHMS-; FREEWAYS-; HEURISTIC-METHODS; MINIMIZATION-; NONRECURRENT-CONGESTION; OFF-RAMPS; OPTIMIZATION-; RAMP-METERING; REAL-TIME-DATA-PROCESSING; TRAFFIC-DIVERSION; TRAFFIC-FLOW; TRAFFIC-INCIDENTS; TRAFFIC-MODELS; TRAFFIC-SIGNAL-TIMING; TRANSPORTATION-CORRIDORS; TRAVEL-TIME |
| 摘要： | An integrated control model and a heuristic algorithm for optimal diversion control in commuting corridors are presented. The proposed optimal control integrates ramp metering, intersection signal timing, and off-ramp diversion in an on-line environment that can minimize the total travel time of time-varying demand in nonrecurrent congestion. To reliably capture the flow interactions during freeway incidents, the proposed control model embodies the following three unique features: (a) modeling traffic state evolution on surface streets with flow conservation within sections, flow transition between sections, and flow discharge at downstream intersections; (b) estimating time-dependent model parameters adaptively with real-time traffic measurements, instead of assuming they are predetermined, as in most studies; and (c) having an efficient solution algorithm. Preliminary numerical tests have demonstrated that both the proposed model and algorithm have the potential for use in on-line diversion control in commuting traffic corridors. |
| 总页数： | Transportation Research Record. 1999. (1667) pp8-15 (6 Fig., 1 Tab., 15 Ref.) |
| 报告类型： | 科技报告 |
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