Most people think that the more people have cars the better, it is not the case all the time because there are advantages and disadvantages. Public transportation also has advantages and disadvantages. There are three reasons for use of public transportation one advantage and two disadvantages.

Supporting detail 1: One advantage of public transportation is faster commutes. People can get from one point to another by bus, commuter rail, and subway or metro.

Supporting detail 2: “One disadvantage is that it can be crowded. During rush hours, buses and trains are packed with commuters, which leads to less space. Whenever a bus or train brakes suddenly, it can cause passengers to bump into one another.”

Supporting detail 3: Another is long wait times. When there is bad weather it makes vehicles arrive later than the normal time. Whenever there is signal problem on a commuter rail, subway or metro line it makes wait times longer.

To summarize most people believe that the more people who own vehicles, the better; however, this is not always the case because there are advantages and downsides. Public transportation offers both benefits and drawbacks. There are three reasons to take public transportation one advantage and two negatives. The advantage is shorter travel times, while the downsides are crowding and long wait periods.

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Supporting detail 1 is kind of short please give me a second example?