LED可变情报板在公路治超非现场执法系统中设置距离研究

Research on Setting Distance of LED Variable Message Sign in Off-Site Law Enforcement System of Highway Overload Management

摘要: 超限运输车辆危害了公路设施，影响了交通安全，公路治超非现场执法系统是治理公路超限运输的有效方法。在公路治超非现场执法系统中LED可变情报板是向驾驶人发布车辆超载信息的交通设施，其设置位置会影响驾驶人视认标志，若设置不合理将无法及时有效地将超载信息传递给驾驶人。本文在分析了驾驶人动态有效视野、动态称重所需时间、视认角以及视认时间等影响情报板设置位置影响因素的基础上，结合情报板设置型式，研究了不同车辆行驶速度和公路宽度条件下动态汽车衡和可变情报板之间的距离要求，研究结果表明车辆行驶速度和情报板型式对设置距离影响较大，建议根据道路条件从驾驶人视认角度出发在节约成本的前提下选用合适的可变情报板型式。

Abstract: The overload transportation vehicles do harm to highway facilities and increase the risk of traffic safety. The off-site law enforcement system is an effective method to control the overload transportation. In the off-site law enforcement system of highway overload transportation management, LED variable message sign is a traffic facility to release vehicle overload information to drivers. Its location will affect the driver’s visual recognition sign. If it is not set reasonably, it will not be able to timely and effectively transmit overload information to drivers. Based on the analysis of the factors that affect the location of the LED variable message sign, such as the dynamic effective visual field range of the motor vehicle driver, the time required for the vehicle weigh in motion, the viewing angle of the information board and the time required for the driver to view the LED variable message sign, and combined with the type of the LED variable message sign, this paper studies the weigh-in-motion and the variable weight under the conditions of different vehicle speed and different road lane widths. The research results show that the vehicle speed and the type of information board have a great influence on the setting distance, so it is recommended to select the appropriate variable information board type according to the road conditions.