There are many differences between America and China. I feel that the biggest difference is traffic rules. In America there are too much more cars than in China, maybe the number of cars in California is the same as the number in China. But there are very fewer traffic jams and accidents in America than in China. We hardly look at traffic police in the street, but all cars obey strictly traffic rules, and people hardly find that a car does not obey traffic rules in the street.
About American traffic rules, I feel that there are many better terms, such as:
1.Stop line: there are stop lines in all crossing without traffic light (some have two stop lines and other have four stop lines), all cars must stop while meeting the stop line.
2. Traffic light: there is traffic light in the crossing of the road. Cars may almost turn every directions, the traffic light can give signal step by step including u-turn. There is a kind of middle lane of turning left. When a car wants to turn left in the road, he may enter into the middle lane of turning left and give a signal of turning left. When he thinks being safe, he may turn left. In every park, there are some special positions for invalid people.
3. Specific item: Such as parking, there are three kinds of lines (its colors is white, blue or red) in the roadside. Every line may park different kind of car. There are many streets in some residential areas, and there is a kind of rule that any car cannot park at any time or any period time. In many conditions the order of passing is also given very specifically. If people want to change lane or turn, they must look behind and think being safe. Only so, they may do it.
4. About the priority of passenger and car: At any case, passenger has the priority to car. But only after passenger have passed the road and gotten the top of sidestep, car may go ahead. In general, traffic rules of America are very specific, convenient, safe, humanizing.
