The traffic situation in many big cities is becoming a big problem and in others cities already is a big problem.Nowadays there are cities where the population is very high and very concentrated.Each member of any family wants to have their own car in order to go to the work,to go shopping,and so on.Many times I think that there are people who could not live without a car.These people use the car almost to go to the bathroom.As well as,it is usual to use the car everyone at same time,for instance in the morning when we have to go to the work,when we have to take the children to the school,also in the evening when we return from the work,when the weekend starts and many people leave the city to go to the house country,etc.All of these situations that I mentioned above,they make a lot of jams where we lose the control,we become like wild animals and therefore we arrive late to the place where we want to go.