I haven't read any posts regarding car accidents so here's a little info.
One- You can call the police and get them on the scene to document everything.
Two- Both parties can go to the police station to file a report. Obviously if it was a minor accident, no severe injuries. GET CONTACT INFO AND CAR INFO.
If you do not speak Spanish, ask for an officer who speaks English. Politely. Not a time to practice your Spanish.
They'll take statements and car info. TAKE PICTURES OF BOTH VEHICLES AND WHERE THE ACCIDENT TOOK PLACE, ESPECIALLY IF THERES STOP SIGNS. They will write who they think is at fault but ultimately the insurance company will decide based on damage if it unclear. Police report will be ready approximately 5 days and you have to pay a "sello" to get it. That may be bought at the station if it's available.
If you have an injury you have to contact ACAA. They have a website. That's all I know.
Some guy hit us and we drove to the station. He immediately said we hit him. 😒 Go figure right.