Variation of traffic flow due to accumulated snow formation on road
Variation of traffic flow due to accumulated snow formation on road
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道路积雪导致交通流量变化
DOI：
10.1051/matecconf/201926502002
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发表时间：
2019
影响因子：
--
通讯作者：
Naohisa Nakamura and Masaya Sato
中科院分区：
文献类型：
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作者：
Kazunori Munehiro;Naohisa Nakamura and Masaya Sato
札幌札幌市是世界上降雪量最大的城市之一，冬季的道路状况变得非常糟糕。为了保证城市的交通功能，冬季除雪工程是必不可少的。雪一清除就在路上堆积起来。堆积的积雪突出到道路的车道中并且交通流量下降也是一个问题。本研究分析了积雪形成的大小和交通流量的变化。我们在札幌市管理的四车道道路（每侧两车道）上设置了摄像机，连续观察了两个季节。根据采集的图像分析积雪宽度和交通性能（交通量-速度）。积雪宽度为1.0 ~ 2.5m。当积雪的宽度超过约1.5 m时，表明如果道路最初每侧两车道运行，则只有一条车道在运行，交通量约为70%，速度约为80%。此外，根据秋季自行车和行人使用的实际情况，提出了考虑积雪覆盖宽度的道路横断面重新分配方案。
Sapporo City has one of the heaviest snowfalls worldwide, and the road conditions in winter are getting remarkably worse. Snow removal works in winter are indispensable in order to secure traffic functions in the city. Snow accumulates on roads as soon as it is removed. It is also a problem that the deposited snow protrudes into the lanes of roads and the traffic flow drops. This study analyzed the size of deposited snow formation and the variation of traffic flow. We set up a camera for a four-lane road managed by Sapporo City (two lanes per side) and observed two seasons continuously. Width of deposited snow and traffic performance (Traffic Volume - Velocity) were analyzed based on the acquired images. The width of deposited snow was from 1.0 m to 2.5 m. When the width of the deposited snow exceeded approx.1.5 m, it was indicated that only one lane of the road will be in operation if it is originally operated as two lanes per side, with about 70% of the traffic volume and about 80% of the speed. In addition, based on the actual situation of use of bicycles and pedestrians in autumn, we propose redistribution of road cross-sections considering snow coverage width.