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快速路瓶颈路段交通特性分析

Keywords: 瓶颈路段,通行能力,交通流率

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Abstract:

为了探求快速路交通瓶颈运行规律,在分析快速路交通流运行特性的基础上,结合调查数据对快速路瓶颈路段交通特性进行了分析.结果表明,交通流运行速度低于40km/h或占有率达到28%时,交通流开始出现拥挤,并且从稳定流到强制流变化过程持续时间较短(小于10min).此外,通过对排队前、排队后以及排队状态下服务交通流率对比分析,发现稳定流到强制流过渡过程中服务流率大于稳定流和强制流状态下的服务流率,应用流量-速度曲线模型法会过高估计快速路路段通行能力.

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