Can California Police Hide While Using Radar?

California Vehicle Code does not explicitly forbid hidden radar use, but the California Highway Patrol (CHP) enforces strict internal policies:

• Officers must be visible to motorists when operating radar—no concealed positions.
• Radar cannot be used for "speed traps" (dedicated enforcement zones without other duties).
• Patrol vehicles must be marked or officer identification clearly displayed.

These rules aim to ensure fairness and transparency. Other agencies may have differing policies; contact the specific department for clarification.