Vacaville, CA Environmental Rules: Vehicle Idling Restrictions (2026)

window if it sits within 500 feet of an occupied home. The 500-foot idling buffer is narrower than the separate 600-foot buffer in subsection N that keeps these same 10,000-pound-plus commercial vehicles off residential streets altogether absent a police permit, so a truck legally parked outside the 600-foot no-parking radius can still trip the idling curfew if it falls within 500 feet of a home and keeps its engine or reefer motor on overnight. The subsection specifically reaches "the vehicle's engine or refrigerator motor of any other kind," language written to capture refrigerated trailers whose cooling units keep running independently of the truck's main engine, a common nighttime noise complaint near residential streets adjacent to commercial corridors. 020 parking-and-stopping enforcement authority, and a violation can be cited the same way as any other prohibited-area parking violation under that section.