Local Transportation
Except in large US cities, public transportation is rarely the most convenient option for travelers, and coverage can be sparse to outlying towns and suburbs. However, it is usually cheap, safe and reliable. In addition, more than half the states in the nation have adopted 511 as an all-purpose local-transportation help line
Read more: http://www.lonelyplanet.com/usa/transport/getting-around/local-transport#ixzz3mT21RHyU