01

Evidence that may help explain what happened

Location and condition images. Agency, vehicle, route, and report identifiers. Witness, maintenance, and camera leads. Preserve originals where practical, note who created each record, and do not alter damaged property or digital files merely to make them easier to present.

02

People and organizations that may hold information

A city, county, state, district, transit agency, contractor, or private operator may control different parts of one setting.