山区公路小半径曲线事故黑点改善效果评价

Effectiveness Evaluation on Traffic Accident Black Spot in Mountain Highway with Sharp Radius of Horizontal Curve

通过现场行车实验,利用动态视角、车辆加速度、横向力系数、驾驶员心率变化等评价方法,对黑点路段改善前后的行车安全水平进行评价分析.结果表明,采取的改善措施使驾驶员视觉感知效果明显增强,车辆行驶稳定性显著提高,降低了驾驶员心理生理负荷.改善措施有效抑制了交通事故,验证了横向超高变坡设计预防交通事故的有效性.

Traffic safety on accident black spot was studied by driving experiment focusing on dynamic sight angle, acceleration, corneringratio and drivers＇ heart rate. The results indicate that visual performance and driving security are enhanced, psychological and physical burden suffered by the drivers alleviated, and the traffic accident restrained. Therefore, improvement measure that makes superelevation slope different on one cross-section proves effective.