self-braking
adjectiveUK /ˌselfˈbreɪkɪŋ/
US /ˌselfˈbreɪkɪŋ/
A self-braking thing stops or slows down by itself without anyone helping it.
The self-braking stroller stops rolling when you let go of the handle.
OTHER MEANINGS
2. Describing a machine or vehicle that applies its own brakes automatically.
The self-braking truck slowed down before the sharp turn.
3. Describing a system that prevents something from moving when it is not being controlled.
The self-braking wheelchair locks its wheels when the user lets go.
4. Describing a toy or device that stops on its own to stay safe.
The self-braking scooter stops when it senses a bump.