Motorbikes have two wheels and are very popular in Vietnam.
In Vietnam's cities, you can see thousands of motorbikes on the streets. People wear helmets to keep their heads safe.
More facts about Common Vehicles
Cars use four wheels and an engine to zoom down the road.
Buses can carry lots of people to school and work all at the same time.
Trains run on metal tracks and can pull many carriages in a line.
Bicycles move when you push the pedals round with your feet.
Japan's bullet trains can zoom faster than 300 kilometres an hour.