Vehicle Idling Restrictions: Mountain View vs Palo Alto
How do vehicle idling restrictions rules compare between Mountain View, CA and Palo Alto, CA?
Mountain View and Palo Alto have similar restriction levels.
Mountain View, CA
Santa Clara County
California Code of Regulations Title 13 §2485 caps heavy-duty diesel idling at five minutes statewide, enforced across Santa Clara County by CARB and the Bay Area Air Quality Management District. The county fleet idle-reduction policy mirrors the limit for county-owned trucks and buses.
View full Mountain View rules →Palo Alto, CA
Santa Clara County
California Code of Regulations Title 13 §2485 caps heavy-duty diesel idling at five minutes statewide, enforced across Santa Clara County by CARB and the Bay Area Air Quality Management District. The county fleet idle-reduction policy mirrors the limit for county-owned trucks and buses.
View full Palo Alto rules →Key Facts Comparison
| Fact | Mountain View | Palo Alto |
|---|---|---|
| Statewide limit | 5 minutes for heavy-duty diesel | 5 minutes for heavy-duty diesel |
| School bus rule | No idling within 100 feet | No idling within 100 feet |
| State authority | 13 CCR §2485 and §2480 | 13 CCR §2485 and §2480 |
| Regional agency | BAAQMD enforcement | BAAQMD enforcement |
| First fine | $300 minimum CARB penalty | $300 minimum CARB penalty |
Highlighted rows indicate differences between cities.
Mountain View FAQ
Does the rule cover passenger cars?
No. Light-duty vehicles under 10,000 pounds are exempt from the five-minute state cap. Residents may still file nuisance complaints through county code enforcement if idling is chronic and disruptive in residential areas.
How do I report an idling truck?
Call CARB at 800-END-SMOG or BAAQMD at 1-800-334-ODOR. Note license plate, location, time, and approximate duration. BAAQMD inspectors typically respond to industrial sites within 24 to 48 hours.
Palo Alto FAQ
Does the rule cover passenger cars?
No. Light-duty vehicles under 10,000 pounds are exempt from the five-minute state cap. Residents may still file nuisance complaints through county code enforcement if idling is chronic and disruptive in residential areas.
How do I report an idling truck?
Call CARB at 800-END-SMOG or BAAQMD at 1-800-334-ODOR. Note license plate, location, time, and approximate duration. BAAQMD inspectors typically respond to industrial sites within 24 to 48 hours.
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