进入第四季度,全国经济呈现企稳向好势头,交通流量明显增长,事故预防压力进一步增大。加之冬季天气多变,雨、雪、冰冻、雾霾等恶劣天气增多,道路湿滑;早晚时段雾天较频繁,能见度差;特别是山区公路一些长下坡路段因重载车辆需要加水冷却制动机件,易在路面形成结 In the fourth quarter, the national economy showed the trend of stabilization and good momentum, with obvious increase in traffic flow and further pressure on accident prevention. Coupled with the changing winter weather, rain, snow, ice, haze and other inclement weather increases, the road slippery; sooner or later foggy days more frequent, poor visibility; especially some long downhill sections of mountain roads due to heavy vehicles need to add water cooling brake Mechanical parts, easy to form knots in the road