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Diesel truck idle limit laws by state

People search “Diesel truck idle limit by state”, “Diesel truck idle limit laws by state”, and “Idle limit map” when a road trip, boat, bike, or load is about to cross a line. This page is the 50-state index for diesel truck idle limit. Colors and quotes are written for someone in that state today, not for what that state demands of its own registered vehicles.

Open the Idle limit difference map

How states differ

How long a diesel CMV may idle.

  • Statewide idle cap (3–5 minutes)
  • No broad statewide cap; cities/counties do limit idle
  • No general statewide commercial idle clock

Searches this page is meant to answer

If you typed any of these — or a close variant with a state name — this is the Crosstatelaws topic that should show up:

  • Diesel truck idle limit by state
  • Diesel truck idle limit laws by state
  • Idle limit laws by state
  • Diesel truck idle limit map
  • Diesel truck idle limit traveling across state lines
  • does diesel truck idle limit change by state
  • truck idling laws by state
  • how long can a truck idle
  • California idle law 5 minutes
  • Diesel truck idle limit in California / Texas / Florida / New York
  • is diesel truck idle limit legal while traveling

All 50 states

One-line traveler summary for each state. Open the map for the quoted rule and footnotes.

Alabama (AL)
Alabama: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Alaska (AK)
Alaska: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Arizona (AZ)
Arizona: no published statewide CMV idle minute clock. City clocks: Phoenix 5 minutes; Tucson 5 minutes.
Arkansas (AR)
Arkansas: no published statewide commercial idle minute clock. Obey posted lot and city signs.
California (CA)
California: 5-minute diesel CMV idle cap statewide, diesel CMV 10,001 lb+ (13 CCR § 2485). Traffic, weather, and PTO exceptions apply.
Colorado (CO)
Colorado: no published statewide CMV idle minute clock. City clocks: Denver 5 minutes.
Connecticut (CT)
Connecticut: 3-minute diesel CMV idle cap statewide (Conn. Gen. Stat. § 22a-174 / DEEP idle). Traffic, weather, and PTO exceptions apply.
Delaware (DE)
Delaware: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Florida (FL)
Florida: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Georgia (GA)
Georgia: no published statewide CMV idle minute clock. City clocks: Atlanta / Fulton 15 minutes (some lots 5).
Hawaii (HI)
Hawaii: 3-minute diesel CMV idle cap statewide (HAR 11-60.1-34). Traffic, weather, and PTO exceptions apply.
Idaho (ID)
Idaho: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Illinois (IL)
Illinois: no published statewide CMV idle minute clock. City clocks: Chicago 3 minutes (Mun. Code 9-80-095); Cook County 5 minutes.
Indiana (IN)
Indiana: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Iowa (IA)
Iowa: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Kansas (KS)
Kansas: no published statewide CMV idle minute clock. City clocks: Kansas City / Wichita local 5 minutes.
Kentucky (KY)
Kentucky: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Louisiana (LA)
Louisiana: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Maine (ME)
Maine: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Maryland (MD)
Maryland: 5-minute diesel CMV idle cap statewide (COMAR 26.11.24). Traffic, weather, and PTO exceptions apply.
Massachusetts (MA)
Massachusetts: 5-minute diesel CMV idle cap statewide (310 CMR 7.11). Traffic, weather, and PTO exceptions apply.
Michigan (MI)
Michigan: no published statewide CMV idle minute clock. City clocks: Detroit / Wayne County 5 minutes.
Minnesota (MN)
Minnesota: no published statewide CMV idle minute clock. City clocks: Minneapolis / St. Paul 3–5 minutes.
Mississippi (MS)
Mississippi: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Missouri (MO)
Missouri: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Montana (MT)
Montana: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Nebraska (NE)
Nebraska: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Nevada (NV)
Nevada: 15-minute diesel CMV idle cap statewide diesel CMV (NRS 445B.760 / NAC 445B). Traffic, weather, and PTO exceptions apply.
New Hampshire (NH)
New Hampshire: 5-minute diesel CMV idle cap statewide (N.H. Rev. Stat. § 125-C / Env-A 1100). Traffic, weather, and PTO exceptions apply.
New Jersey (NJ)
New Jersey: 3-minute diesel CMV idle cap statewide (N.J.A.C. 7:27-14). Traffic, weather, and PTO exceptions apply.
New Mexico (NM)
New Mexico: no published statewide commercial idle minute clock. Obey posted lot and city signs.
New York (NY)
New York: 5-minute diesel CMV idle cap statewide (NYC 3 minutes) (6 NYCRR 217-3 / NYC Admin. Code § 24-163). Traffic, weather, and PTO exceptions apply.
North Carolina (NC)
North Carolina: no published statewide commercial idle minute clock. Obey posted lot and city signs.
North Dakota (ND)
North Dakota: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Ohio (OH)
Ohio: no published statewide CMV idle minute clock. City clocks: Cleveland / Columbus / Cincinnati 5 minutes.
Oklahoma (OK)
Oklahoma: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Oregon (OR)
Oregon: 5-minute diesel CMV idle cap statewide commercial diesel (DEQ) (OAR 340-256 / ORS 825.646). Traffic, weather, and PTO exceptions apply.
Pennsylvania (PA)
Pennsylvania: 5-minute diesel CMV idle cap statewide diesel (35 P.S. § 4001 / 25 Pa. Code diesel idle). Traffic, weather, and PTO exceptions apply.
Rhode Island (RI)
Rhode Island: no published statewide commercial idle minute clock. Obey posted lot and city signs.
South Carolina (SC)
South Carolina: no published statewide commercial idle minute clock. Obey posted lot and city signs.
South Dakota (SD)
South Dakota: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Tennessee (TN)
Tennessee: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Texas (TX)
Texas: no published statewide CMV idle minute clock. City clocks: Houston / Dallas / Austin 5 minutes.
Utah (UT)
Utah: no published statewide CMV idle minute clock. City clocks: Salt Lake County 2 minutes (some 15 with APU).
Vermont (VT)
Vermont: 5-minute diesel CMV idle cap statewide (23 V.S.A. § 1110 / ANR idle). Traffic, weather, and PTO exceptions apply.
Virginia (VA)
Virginia: 10-minute diesel CMV idle cap statewide in commercial / residential areas (Va. Code § 46.2-1220 / 9VAC5-40). Traffic, weather, and PTO exceptions apply.
Washington (WA)
Washington: no published statewide commercial idle minute clock. Obey posted lot and city signs.
West Virginia (WV)
West Virginia: no published statewide commercial idle minute clock. Obey posted lot and city signs.
Wisconsin (WI)
Wisconsin: no published statewide CMV idle minute clock. City clocks: Milwaukee / Madison 5 minutes.
Wyoming (WY)
Wyoming: no published statewide commercial idle minute clock. Obey posted lot and city signs.

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Not legal advice. Confirm statutes before you travel. Disclaimer.