If you or another person called the police at the scene and they arrived to fill out a report, you likely do not have to take any additional steps. Still, ask the responding officer if you must fill out any reports at the scene or later online or at a police station.
Colorado operates an Online Accident Report system where you may report minor accident report. The Arvada Police Department previously accepted over-the-counter accident reports, but now refers those involved in minor accidents to the Online Accident Report system.
In order to file an online accident report, the accident must:
have not involved fatality or injury requiring on-scene medical care;
not be a hit and run;
not involve damage to public property;
not involve drivers who were under the influence of alcohol or drugs; and
not involve drivers driving without insurance or a valid license.