# Collisions and CollisionEffectsData
### Collision Manager
The CollisionManager is a component which sits on the same GameObject as the Rigidbody and captures the collision events, then invokes its own events for the AVC components that require them.
### Events
These events are public and free for you to use anyway you should need. Just get a reference to the CollisionManager and then subscribe to the following.
Action\ OnVehicleCollisionEnter
Action\ OnVehicleCollisionExit
Action\ OnVehicleCollisionStay
### CollisionEffectsData
The CollisionEffectsData holds the information required for collisions.
**Effects ID** (optional) - Enter a name for this effect, if you are using a 'Custom' CollisionType, otherwise it can be left blank.
**Collision Type** - Select the type of collision this asset is for. There currently only options Default and Custom.
**Effect Prefab** - Assign the prefab that should be spawned when this collision occurs. Two example prefabs are included with AVC.
**Required Speed** - Set this to the minimum speed you want your vehicle to be moving for this effect to spawn.
### Collision Tag
This component is used by AVC for spawning custom effects on collisions, add this to any object you wish to have a custom particle system spawn when hit, enter the required CollisionID, and as long as the CollisionEffectsData for it is added to the vehicles, then this effect will spawn on collision.
