Dooring

Dooring is when someone opens a car door and a person on a bike or a scooter crashes into it. Imagine you are riding your bike and someone opens their car door suddenly in front of you, you can't stop your bike in time and you crash into the door. It's dangerous for the person riding the bike because they can get hurt badly. This is why people who ride bikes or scooters always try to stay far away from parked cars or be very careful when they ride next to them. Drivers need to be careful too, so they should always check if there is anyone on a bike or a scooter before they open their car door.