Discount tickets are offered to ______.
(A) car pools
(B) cities
(C) commuters
(D) traffic reports

Traffic in most American cities is a problem, especially during the rush hours when many people are going to or returning from work.

Consequently因此；所以, there are traffic reports on the radio throughout the day, and there are many articles about traffic issues and traffic accidents in the newspaper.

Traffic issues, road building, repairs, and the quality of public transportation are so important to the general public that they are often brought up during political政治的 campaigns.

Expanding擴展的 public transportation and encouraging carpools拼車族 are two methods often discussed to improve traffic congested堵塞的；擁擠的.  

Many major cities are beginning to designate指定，選定 one lane路, 鄉間小路 of their major highways for only car pool traffic during rush hours, and special car pool parking lots are being built outside major cities.

In addition, people are being encouraged to use public transportation, such as buses and underground trains whenever possible.

Many cities offer special discount tickets on public transportation for commuters who use this form of transportation regularly.