The invention belongs to the technical field of road traffic safety, and particularly relates to a variable speed limit early warning method and system for a mountainous area road curve on rainy days, which are based on a tire-fluid-road surface coupled lateral deviation anti-slip model and combined with various factors such as vehicle speed, road surface polishing and water film thickness to predict the anti-slip performance decay characteristic of a curve road surface. According to curve vehicle lateral slip mechanism analysis, a curve pavement available anti-slip value and a vehicle anti-slip demand value are calculated and generated, a safe speed limit value is obtained, and a safe speed limit database is formed; therefore, when a vehicle runs on a rainy mountainous road, vehicle, road surface and rainy day environment analysis parameters are collected and matched with the safety speed limit value in the database, and early warning is carried out in advance. The problem that the variable speed limit early warning value is not accurate due to the fact that the influence of the rainy environment and the actual texture polishing state of the road surface on the anti-skid performance of the road surface is not considered in an existing scheme can be solved.
本发明属于道路交通安全技术领域,尤其涉及一种雨天山区公路弯道可变限速预警方法与系统,基于轮胎‑流体‑路面耦合的侧偏抗滑模型,结合车速、路面磨光、水膜厚度等多种因素,对弯道路面抗滑性能衰变特性进行预测,进而根据弯道车辆侧向滑移机理分析,计算生成弯道路面可用抗滑值和车辆抗滑需求值,获取安全限速值,形成安全限速数据库;以此使得车辆在雨天山区公路行驶时,采集车辆、路面、雨天环境分析参数,匹配数据库中的安全限速值,并进行提前预警。本发明能够解决现有的方案中缺少考虑到雨天环境和路面实际纹理磨光状态对路面抗滑性能的影响,导致可变限速预警值不准确的问题。
Variable speed limit early warning method and system for road curve in mountainous area in rainy days
一种雨天山区公路弯道可变限速预警方法与系统
2024-01-30
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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