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近年来,随着道路状况的逐步改善,特别是高速公路的快速发展,汽车通常以100公里/小时或更高车速行驶。随之而来的是道路交通安全问题突出,世界上每年
In recent years, with the gradual improvement of road conditions, especially the rapid development of freeways, cars usually travel at a speed of 100 km / h or more. What followed was a prominent road traffic safety issue in the world each year