Texas Truck Idling Law
Texas has no rule that covers the whole state. About 40 cities (Houston, Dallas, Fort Worth, Austin, San Antonio, El Paso and others) and 10 counties signed agreements with TCEQ and adopted a 5-minute limit (30 TAC 114.510). Trucks 14,000 pounds and under are exempt, as are 2008-and-newer Certified Clean Idle engines. Fines are set by each city.
When you can keep idling
- Trucks 14,000 lbs GVWR or less
- 2008-and-newer engines certified under 30 g/hr NOx (Certified Clean Idle)
- Traffic and emergencies
- Hours-of-service rest when no shore power is within 2 miles
APUs and idle-reduction gear
The rule limits the main engine, so an APU keeps you legal. Idle-reduction tech earns up to a 550-pound weight allowance.
City and county ordinances
- About 40 cities (Houston, Dallas, Fort Worth, Austin, San Antonio, El Paso) and 10 counties enforce the rule.
Texas Idling Law FAQ
Is there a truck idling law in Texas?
How long can a truck idle in Texas?
What is the fine for idling in Texas?
Does an APU count as idling in Texas?
This page is reference information for planning, not legal advice. Idling rules change and many are local. Confirm the current rule with the state environmental or transportation agency before you rely on it. Source: https://afdc.energy.gov/fuels/laws/IR?state=TX.
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