Road vehicles are a common form of transportation used around the world. A TRAM is a rail-based vehicle that runs on tracks and is powered by electricity. Buses are large vehicles that transport people from one place to another. Vans are smaller vehicles that are often used for commercial purposes. Cars are four-wheeled vehicles that are powered by an internal combustion engine. Trucks are larger vehicles that are used to transport goods. Motorcars are cars that are powered by an electric motor.