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利用驾驶模拟器,测试了我国线形诱导标在双车道公路平曲线上对驾驶员实际和感知安全速度的影响.设计和使用12种具有不同道路几何条件的平曲线作为模拟场景.结果表明,不受曲线半径影响,对行驶方向靠近线形诱导标的车辆,平曲线处的诱导标具有提前预警和速度控制的作用.除此,线形诱导标可以辅助限速标志预防车辆在平曲线处超速行驶,进而有助于减少弯道处车辆冲出道路的事故.此外,我国的线形诱导标可以增强急弯处行驶的安全感.研究结果为更加规范合理设置我国的线形诱导标奠定基础.
Using the driving simulator, the actual and perceived safety speed of the driver on the two-lane highway curve is tested by using the linear guidance marker in our country. Twelve flat curves with different road geometry are designed and used as simulation scenarios. The results show that, Affected by the radius of the curve, the guidance signs on the flat curve are provided with early warning and speed control on the vehicles whose direction of travel is close to the linear guidance signs. In addition, the linear guidance signs can assist the speed limit signs to prevent the vehicles from speeding at the flat curves, Which can help to reduce the accident of the vehicle getting out of the road in the corner.In addition, the linear guidance mark in our country can enhance the safety of driving in the sharp corner.The research results lay the foundation for more standardized and reasonable setting of the linear guidance mark in our country.