能够拥有一段假期,开车族们就会想到离开拥挤的都市道路,驾车出去兜一个大圈,享受一番真正在天地间自由遨游的驾车乐趣。但驾驶汽车长途行驶时,我们经常通过的是城市道路、高速公路、山地路、隧道、桥梁、凹凸路、泥泞路、沙漠路等各种复杂的路况和地形,气候变化和道路异常动态随时可能发生,这些都 To have a holiday, the car owners will think of leaving the crowded urban roads, driving out of pocket, enjoy the real freedom to travel between the world of driving pleasure. However, when driving a car for a long distance, we often pass various complicated road conditions and topographies such as urban roads, highways, mountain roads, tunnels, bridges, bumpy roads, muddy roads and desert roads, and climate change and road anomalies are likely at any time It happened, these are all