If a local, county, or state law enforcement agency like police or sheriff did not do any action or did not investigate the accident a driver has orally reported, the driver should then file a written report regarding the incident. But if the opposite happens, where an incident was already orally reported and the police did a formal investigation, one does not have to file any type of written report. And as said above, if the police or sheriff did not investigate a reportable incident, the driver should ensure that a written accident report must be filed within 10 days after the accident to the Florida Department of Highway Safety and Motor Vehicles.