No one wants to get into a car accident, but if you do, you need to be prepared. How you deal with the car accident will depend on a number of factors, but you need to make sure you get the identification of the other driver and the insurance information needed if possible. If you're injured or hospitalized following the crash, this information can be collected by the police and given to you at a later date if you request it. If you're able to wait at the scene for assistance, you may want to get some information about witnesses and the other driver while you wait for medical care.
The most important things to obtain are insurance information, telephone numbers and the name of the person involved. If you can get a license plate ID, that information could also be helpful, especially if any of the information about the person turns out to be false. Witness information can help if you need to follow up with them later to discuss what happened for a lawsuit.
An accident report will need to be filed if you've been in an accident regardless of injury or damage. If you're hurt or the other person is injured, emergency services should be called. If you're able to provide aid, you should do so; otherwise, wait for help to arrive.
The police will create your accident report on arrival and after those who need medical attention receive it. If there is a suspicion of drunk driving or other factors in your crash, police will also take this into consideration before placing charges.
Source: DMV.org, "Accident Guide in Colorado," accessed July 02, 2015