其中比较突出的问题是避险车道，交通标志标线等安全设施设置不合理。
The main difficulties and problems is setting unreasonable on traffic safety facilities such as truck escape ramp, road signs and road traffic marking.
交通信号包括交通信号灯、交通标志、交通标线和交通警察的指挥。
Traffic signals include traffic signal lamps, traffic signs, traffic line markings and the command of traffic policeman.
交通标志和减速振动标线对于防止交通事故有重要的作用，也是山区公路主要的交通安全设施。
Traffic signs and deceleration vibration marking are important for the prevention of traffic accidents, it is also the main mountain road safety facilities.
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