How is a streetcar different from a city bus?
Even though streetcars can travel just about anywhere they are limited by the rails on which they operate and the overhead wires. In situations where streetcar lines are affected by traffic slow downs, the streetcar cannot go around the object which can cause delays. Since gasoline-powered buses use neither rails nor wires, they can maneuver through and around traffic easier than streetcars. Streetcars also rely on electricity for their power and do not cause pollution unlike gasoline buses which produce exhaust fumes.
