If you cannot live without your car, Zurich might be the last city you would liketo visit. In Zurich, people are welcome, but cars are not! Over the past 20 years, thiscity has used smart ways 19 . One is to keep the same total number of parkingspaces. For example, if 50 new parking spaces are built in one part of the city, then50 old spaces in other parts are taken away for other uses. So the total number doesnot change. Some are unhappy that there are never enough spaces. That is just whatthe city has in mind: If people find parking more difficult, they will drive less.20 , the total number of cars in the city is counted. Over 3,500 littlecomputers are put under Zurich roads to check the number of cars that enter the city.If the number is higher than the city can deal with, the traffic lights on the roads thatenter the city will be kept red. So drivers who are traveling into Zurich have to stopand wait until there are fewer cars in the city. Now, you may wonder 21 . Theanswer is simple: The city wants to make more space for its people.