When you have a collision, report it to DMV using an SR-1 report. Contact us as soon after a crash as possible.This includes taking photographs of the accident scene, documenting your injuries, and securing witness testimony. If you are involved in a car accident, remain at the scene. The DMV requires that accidents be filed using the SR-1 Accident Reporting Form. Fill out claim as indicated; attach additional information if necessary; Return the original in person or US Mail to: Executive Officer, Board of Supervisors You must document your expenses and losses to prove your damages. Damages can include monetary and non-monetary losses, like pain and suffering. • Within 3 business days of the accident, fill out the County of Los Angeles Report of. If you're filing an SR-1 form online, you must do so within 10 days of the accident.