Transportation saftey is very important to any age of people.Everyone should obey the rules so that it would be a safe place.People who walk should be on the sidewalk and crosswalk,whereas also they should not play,look ahead and watch out cars.People who ride bikes should always go ahead until the green light has lit,and beware of traffic
行走骑自行车的安全事项写一篇英语作文60个词左右