By and large, it's way cheaper to use public transportation to get around than it is to buy your own vehicle. ... Using public transport is much less taxing on the environment compared to private vehicles. Since a lot of people can ride the same vehicle, the carbon emissions per head are largely reduced.
 It's Safer
Public transportation is much safer than traveling by car. APTA reports that you can reduce your chance of being in an accident by 90% if you switch to public transit. They also state that public transportation is 10 times safer per mile than automobiles.