Прочитайте текст и определите какой из заголовков соответствует тексту In recent years serious traff...: ответ на тест 782657 - Английский язык

Прочитайте текст и определите, какой из заголовков соответствует тексту
In recent years, serious traffic problems have developed in most large cities. Many cities have experimented with different ideas for controlling the traffic. For example, in some places, they have established ‘park and ride’ systems, where people can park their cars and travel into the city by bus. Other cities have introduced a complete ban on certain days of the week.
New technology has also made other solutions possible. In some cities, for example, they have placed automatic posts in the middle of roads into the city centre. These posts prevent cars from entering the city centre, but when taxis, buses and ambulances approach them, they automatically disappear into the ground.
Many city councils have also put computers and scanners on all roads into the city. Drivers have to buy a special electronic card and put it in their car. When the car has passed through a scanning machine, a computer checks the card and allows the car to go through. Drivers who have not remembered to put their card into their car cannot take their cars into the city.