隧道内大量尘埃、废气凝聚造成路面摩擦系数低;隧道内外明暗对比度大;缺少防护栏等安全防护设施;烟雾浓度高能见度低,照明不科学等等,是造成隧道交通事故多发的主要原因。为此,在设计、施工、安全管理上要充分考虑上述问题,并认真地分析各地不同的自然条件,在积累大量的统计材料的基础上,总结经验,真正走出一条适合我国国情的隧道建设发展模式。 The large amount of dust in the tunnel and the condensation of exhaust gas cause low friction coefficient of the road surface; the contrast between light and dark inside and outside the tunnel is large; the safety protection facilities such as the safety fence are lacking; the low smoke density visibility and the unscientific lighting are the main causes of traffic accidents in tunnels. Therefore, we should fully consider the above problems in the design, construction and safety management and carefully analyze the different natural conditions in different places. Based on the accumulation of a large amount of statistical materials, we should sum up our experiences and truly go through the development of a tunnel that suits our national conditions mode.