The act of dooring is when a driver or passenger opens a car door unsafely into the path of oncoming traffic, resulting in a collision or swerving. Dooring can lead to serious injuries or even death, particularly for cyclists.
When opening door prohibited MVA Motor Vehicle Act
203 (1) A person must not open the door of a motor vehicle on the side available to moving traffic unless and until it is reasonably safe to do so.
(2) A person must not leave a door open on the side of a vehicle available to moving traffic for longer than is necessary to load or unload passengers.