Utah Truck Idling Law
Utah has no statewide idling time limit for trucks. State law covers school buses and discourages leaving a truck idling unattended, but the real limits are local: Salt Lake City caps idling at 2 minutes ($50 to $210), and Park City at 1 minute.
Some figures on this page are flagged medium confidence. The limit and source are solid, but a specific fine or local detail should be confirmed with the state agency before you rely on it.
When you can keep idling
This state has no statewide idling limit, so there are no statutory exemptions to list. Local ordinances, where they exist, carry their own.
APUs and idle-reduction gear
No statewide rule.
City and county ordinances
- Salt Lake City: 2 minutes, $50 to $210 (SLC Code 12.58)
- Park City: 1 minute
- South Salt Lake and Salt Lake County have their own ordinances
Utah Idling Law FAQ
Is there a truck idling law in Utah?
How long can a truck idle in Utah?
What is the fine for idling in Utah?
Does an APU count as idling in Utah?
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=UT.
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