# Brakes for a physics vehicle? **URL:** \ **Category:** World Creation\ **Tags:** unreal-engine, Physics, Vehicles\ **Created:** [April 14, 2020, 8:40pm UTC](https://forums.unrealengine.com/t/brakes-for-a-physics-vehicle/141520 "2020-04-14T20:40:35Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Whammy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Whammy](https://forums.unrealengine.com/u/Whammy)\ **Post date:** [April 14, 2020, 8:40pm UTC](https://forums.unrealengine.com/t/brakes-for-a-physics-vehicle/141520/1 "2020-04-14T20:40:35Z")
I have a multi-wheeled vehicle created using physics constraints. I need to add friction to the constraints at the wheels to simulate braking. I’ve tried setting the angular motor velocity to zero and the strength to something really high, but the vehicle still creeps on hills. Is there a way to stop the wheel rotation? I also tried locking the axis constraint. But that causes the wheels to spin violently back to zero rotation, flinging the vehicle. This has me stumped. Ideas? ---
**Author:** ![JohnADaniels](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/johnadaniels/32/1080686_2.png) [@JohnADaniels](https://forums.unrealengine.com/u/JohnADaniels)\ **Post date:** [April 3, 2022, 10:15pm UTC](https://forums.unrealengine.com/t/brakes-for-a-physics-vehicle/141520/2 "2022-04-03T22:15:02Z")
Exact same boat as you, did you ever figure anything out? ---
**Author:** ![ThalesMML](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@ThalesMML](https://forums.unrealengine.com/u/ThalesMML)\ **Post date:** [May 31, 2025, 9:53am UTC](https://forums.unrealengine.com/t/brakes-for-a-physics-vehicle/141520/3 "2025-05-31T09:53:24Z")
How about allowing vehicle to sleep when parking brake on?