San Ramon, CA Environmental Rules: Vehicle Idling Restrictions (2026)

The rule sits inside the loading-space standards that every commercial, industrial, office, and institutional development must meet before the City approves a loading dock. Section D3-39(B) requires those loading areas to be located outside setbacks, screened from neighboring properties with landscaping or masonry walls, paved with dust-free surfacing, and clearly striped 'Loading Only' in four-inch letters. Item 10 of that same subsection adds the idling prohibition: a delivery vehicle cannot keep its engine running while goods are being loaded or unloaded at the required facility.

The Zoning Administrator can waive or modify the loading standards, including the idling condition, only through an approved On-Site Delivery Plan that also restricts delivery hours to non-business hours for the tenant. The idling ban is not a citywide anti-idling law; it applies specifically to the off-street loading facilities required by the Zoning Ordinance for the listed commercial and institutional uses, not to a driver stopped at a curb or waiting in a drive-through. Any development that skips the electrical hookup alternative and instead leaves refrigerated trucks running at the dock is out of compliance with the conditions attached to its use permit or site plan approval, since Section D3-39 standards are incorporated into every approval for a use that requires loading spaces under Table 3-14.