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Energy and Transportation Science Division, Making the Traffic Operations Case for Congestion Pricing: Operational Impacts of Congestion Pricing.
| 题名： | Energy and Transportation Science Division, Making the Traffic Operations Case for Congestion Pricing: Operational Impacts of Congestion Pricing. |
| 作者： | Chin, S. M.; Davidson, D.; Hu, P. S. |
| 关键词： | Highways; Impacts; Mobility; Speed; Traffic Congestion; Traffic Flow; Traffic Operations; Traffic Safety; Travel Delay |
| 摘要： | Congestion begins when an excess of vehicles on a segment of roadway at a given time, resulting in speeds that are significantly slower than normal or 'free flow' speeds. Congestion often means stop-and-go traffic. The transition occurs when vehicle density (the number of vehicles per mile in a lane) exceeds a critical level. Once traffic enters a state of congestion, recovery or time to return to a free-flow state is lengthy; and during the recovery process, delay continues to accumulate. The breakdown in speed and flow greatly impedes the efficient operation of the freeway system, resulting in economic, mobility, environmental and safety problems. Freeways are designed to function as access-controlled highways characterized by uninterrupted traffic flow so references to freeway performance relate primarily to the quality of traffic flow or traffic conditions as experienced by users of the freeway. |
| 报告类型： | 科技报告 |
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