Missouri law requires vehicle owners and drivers to have liability insurance to cover injuries and damage that they cause to others, as well as uninsured motorists insurance to cover injuries to them and their passengers in collisions with motorists who have no insurance. Drivers are required by law to have proof of insurance in the vehicle.
You should notify your insurance company if you have been in a car accident so they can start processing a claim. Have your policy information handy when you call. Provide your insurance company with the name of the other drivers involved and their insurance information. Also provide the insurance company with the police report or report number if you have it.