Emergency vehicles use loud sirens so other cars know to move over.
When you hear a wee-oo sound, a helper is on the way. Cars pull to the side to let them pass safely.
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Fire trucks carry long hoses and ladders to help put out fires.
Ambulances rush sick or hurt people to the hospital to get better.
Police cars have flashing lights and sirens to help keep people safe.
Fire trucks carry their own water so helpers can start right away.
The tallest fire truck ladders can reach more than 30 metres up.