What records exist and who holds them
The police or highway patrol may hold the crash report, body-camera records, photos or diagrams. The report can help identify drivers, witnesses, insurance details and road conditions. It may still miss later care, bike damage, video and medical changes. Treat it as a starting point, not the final word.
Medical records are usually held by hospitals, clinics, ambulance providers and other care providers. HHS says people generally have a right to see and get copies of their health information from covered providers and plans. Ask for visit notes, imaging reports, bills and discharge papers. Keep your own symptom and work-limit notes too.
Insurance records are held by your motorcycle insurer, the other driver's insurer and sometimes a household or umbrella insurer. NAIC material explains that motorcycles usually need a separate policy, so do not assume a car policy covers the bike. Save declarations pages, claim letters, denial letters, recorded-statement requests and repair estimates.
Road records may sit with a city, county, state transportation agency, contractor or utility. Useful records can include prior complaints, maintenance logs, work-zone plans, permits, repair orders and photos. For a traffic signal, the useful records may include timing plans, outage logs and maintenance tickets. The right holder depends on the exact location.