There are three main types of transport: land, air, and water. Land transport includes vehicles that move on land like buses, motorcycles, and bullock carts, which can be two-wheeled, three-wheeled, or four-wheeled. Air transport consists of aeroplanes and helicopters that move through the air. Water transport covers vessels that travel on water such as motor boats, ships, and boats. Most transports are powered by petrol, diesel, or gas but some can also run on electricity.