a vehicle that flies in the air and has wings and at least one engine
the plane - airplane
a vehicle used for travelling or carrying things into space, which is shaped like a big tube
The rocket
a set of red, yellow, and green lights that control traffic
Traffic lights
a very wide road for travelling fast over long distances, especially between cities
a motorway
a police officer who stands in the road and directs traffic
a traffic cop
a special ticket giving cheap or free bus travel
a bus pass
the process of making air, water, soil etc dangerously dirty and not suitable for people to use, or the state of being dangerously dirty
pollution
a type of small, less powerful motorcycle with small wheels
a scooter
a strong hard hat that soldiers, motorcycle riders, the police etc wear to protect their heads
a helmet
a strong vehicle with large wheels, used for pulling farm machinery
a tractor
a small vehicle with four wheels in which a baby can lie down while it is being pushed
a pram
Image of cranea large tall machine used by builders for lifting heavy things
a crane
