Massachusetts Truck Idling Law
Massachusetts limits any vehicle, trucks included, to 5 minutes of unnecessary idling (M.G.L. c. 90, 16A and 310 CMR 7.11). There is no temperature break and no sleeper-berth exemption in the statute, so this one is strict. Boston enforces it with a dedicated team. Fines are up to $100 first and up to $500 after.
Statewide lawYes
Limit5 minutes
FineUp to $100 first, up to $500 after
StatuteM.G.L. c. 90, 16A; 310 CMR 7.11
01
Exemptions
When you can keep idling
- Service where the engine must run
- Deliveries needing engine power with no alternative
- Other non-movement power needs with no alternative
02
APUs
APUs and idle-reduction gear
No explicit APU clause, but auxiliary power for a non-movement need with no alternative is exempt.
03
Local rules
City and county ordinances
- Boston runs a dedicated idling-enforcement team (Idle-Free Boston).
Massachusetts Idling Law FAQ
Is there a truck idling law in Massachusetts?
Yes. Massachusetts enforces a statewide idling limit on commercial diesel trucks: 5 minutes. See the statute and exemptions below.
How long can a truck idle in Massachusetts?
5 minutes. See M.G.L. c. 90, 16A; 310 CMR 7.11.
What is the fine for idling in Massachusetts?
Up to $100 first, up to $500 after.
Does an APU count as idling in Massachusetts?
No explicit APU clause, but auxiliary power for a non-movement need with no alternative is exempt.
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=MA.
04
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