中文摘要：

为降低重型车辆在山区高速公路长大下坡路段的事故率，通过在此类路段设置新型的沥青混凝土减速带，利用振动知觉对驾驶员施加减速压力，提高行车的安全性。采用轮荷冲击系数、动载荷系数和振动加速度均方根（RMS）等3项指标对该型减速带的安全性和控速效果进行评价，并利用车辆动力学仿真试验与实车试验相结合的方式，对沥青混凝土减速带的几何外形、尺寸等进行优化设计。依托云南省罗富高速公路长大下坡路段开展应用，通过多点断面采集车速数据分析振动减速带的控速效果。结果表明：经过振动减速带前后，超过路段限速行驶的重型车辆比例从98．2％降为30．4％，且交通事故率和人员伤亡率均明显下降；优化设计后的振动减速带既能满足控速要求，也不损伤车辆、乘员及货物等。

英文摘要：

In order to reduce the accident rate of heavy-duty vehicles on downhill segments of freeway in mountainous areas, a new type of deceleration bump is set for these segments to exert vibration pressure on drivers, which can make them slow down, hence increasing driving safety of these vehicles. Three kinds of criteria, i. e. wheel load impact factor, dynamic load coefficient and vibration acceleration root-mean- square （RMS） value, were taken to assess this type of deceleration bump. Combining vehicle dynamics simulations and field tests, geometric dimensions of vibrating deceleration bumps were designed. This type of vibrating deceleration bump was applied on some segments with long steep downhill in Luocunkou-funing freeway, Yunnan province in China. Effectiveness assessment of vibrating deceleration bump was made through multi-section speeds collection and analysis. The results show that ratio of speeding has dramatic- ally decreased from 98.2% to 30.4% , when heavy-duty vehicles go through vibrating deceleration bump.Moreover, the accident rate and injury rate have both been reduced sharply on these segments, this type of bump also meets the requirements of both speed control effectiveness and safety of heavy-duty vehicles, passengers and goods.