If you are in a car accident and the car is damaged and/or you are injured (or someone else’s car is damaged and/or someone else is injured), then the drivers are required by law to do certain things.
C.R.S. 42-4-1601 (1): A driver involved in a car crash in which someone is injured is required to stop, stay at the scene, or return to the scene until the driver fulfils the requirements of C.R.S. 42-4-1603 (1).
C.R.S. 42-4-1603(1): A driver involved in a car crash in which someone is injured is required to give name, address, and registration number of the vehicle to the other drivers. And, upon request, a driver is required to exhibit the driver’s license to the other drivers. A driver involved in a car wreck in which someone is injured is also required to render aid and/or assistance to the injured person.
To move or not move the car: If there are signs direction drivers to move crashed cars from traffic, then the drivers should move the cars from traffic. If there are no such signs, then it’s a judgment call. If it was a very minor collision with probably no injuries and it’s rush hour traffic, then maybe the car should be moved from traffic. If it was a huge collision involving serious injuries, then the cars probably should not be moved from traffic. Generally, it is preferable to not move the cars so as to preserve evidence for the investigating authorities.