求翻译 Winter travel can be dangerous due to heavy snowfalls and icy conditions.Some roads and bridges are often closed in winter.Snow tires are required in some provinces.Travelers should also be careful about animals while driving at night in rural areas.Highway 401,from Detroit to Montreal,is one of the busiest highways in North America.It has been the scene of many deadly traffic accidents due to sudden and severe weather changes,high rates of speed,and heavy truck traffic.Thus drivers should be alert while travelling here.Please refer to our Road Safety page for more information and tips .Also,we suggest that you visit the website of Canada’s national authority responsible for road safety.