Minnesota idling law: no general statewide limit

What the law says

All operators of diesel school buses must minimize, to the extent practical, the idling of school bus engines and exposure of children to diesel exhaust fumes.

Minn. Stat. §123B.885, subd. 1

Who and what it covers

The state statute covers only diesel school buses and sets no number of minutes; it is a duty to minimize idling “to the extent practical.” A separate statute, Minn. Stat. §171.0701, subd. 1(c), requires driver education courses to include carbon monoxide instruction with “specific suggestions regarding vehicle idling practices,” but it regulates the curriculum, not drivers. Private passenger cars face no state idling limit anywhere in Minnesota.

Exemptions

• State law: none; there is no statewide idling prohibition to except from
• Minneapolis, all vehicles (§58.120): emergency, law enforcement, public utility, military and other city vehicles running lights, water circulation or mission accessories, or engaged in emergency or enforcement work
• Police K9 and Animal Control vehicles keeping a safe climate for animals; city vehicles at a job site in inclement weather when a supervisor authorizes it
• Maintenance, servicing, repair, mandated inspection or diagnostics that require idling; traffic congestion
• Defrosters, heaters, air conditioners or installing equipment solely to prevent a safety or health emergency, not as part of a rest period
• Up to 15 minutes in any sixty-minute period to keep paying passengers comfortable
• Below 0°F or above 90°F, idling of up to 15 consecutive minutes in any one-hour period for driver or passenger comfort and safety
• Power for work other than propulsion, such as mixing or processing cargo or operating lifts (not cabin comfort)
• Minneapolis, commercial diesel (§58.50): occupied sleeper berths during a rest period, occupied vehicles waiting to load or unload, passenger buses up to 15 minutes per hour, armored vehicles, and mechanical difficulties (an officer may demand repair records)
• Auxiliary power units and generator sets are never prohibited in Minneapolis (§§58.60, 58.130)

Penalties

Section 123B.885 contains no penalty. In Minneapolis, violations of the commercial diesel article can be prosecuted as criminal offenses under Code §1.30 or enforced as administrative offenses under chapter 2 (§58.70); for the all-vehicle article, criminal prosecution is available only for repeat offenses within a two-year period, otherwise enforcement is administrative (§58.140). Chapter 58 itself does not set a dollar amount.

Who enforces it, and how to report

School districts and their bus operators carry out §123B.885. Elsewhere, enforcement depends entirely on city code: Minneapolis enforces chapter 58 through administrative citations and, in some cases, criminal charges. A search of St. Paul’s code on Municode returned no vehicle idling provision.

For a school bus, contact the school district’s transportation office, since §123B.885 binds bus operators and the school board. In Minneapolis, the city’s help line is 311 or 612-673-3000; chapter 58 does not name a separate idling complaint channel. Outside cities with an ordinance, there is no state rule for a complaint to rest on.

Schools and school buses

Minn. Stat. §123B.885 requires all diesel school bus operators to minimize idling and children’s exposure to diesel exhaust (subd. 1). Since July 1, 2003, diesel school buses must be parked and loaded far enough from school air-intake systems to keep fumes out, unless the school board judges that other locations would block traffic, impair student safety or not be cost effective (subd. 2).

Local rules in Minnesota

• Minneapolis (commercial diesel): Diesel commercial motor vehicles (as defined in 49 CFR 390.5) may not idle more than 5 minutes in any sixty-minute period. A load or unload location owner or operator may not let covered vehicles idle more than 30 minutes in any sixty-minute period while loading, unloading or waiting to. Penalty: criminal offense under §1.30 or administrative offense under chapter 2; no fixed fine in chapter 58. (Minneapolis Code of Ordinances §§58.20, 58.30, 58.40, 58.70)
• Minneapolis (all other vehicles): No person may allow a gasoline or diesel motor vehicle to idle more than 3 consecutive minutes in any one-hour period; below 0°F or above 90°F the cap is 15 consecutive minutes per hour. Penalty: administrative offense under chapter 2; criminal only for repeat offenses within two years; no fixed fine in chapter 58. (Minneapolis Code of Ordinances §§58.100, 58.110, 58.120(8), 58.140)

History

Section 123B.885 was enacted by Laws 2002, chapter 364, section 2. Minneapolis adopted chapter 58 in 2008 (Ordinance 2008-Or-022, March 21, 2008, and 2008-Or-042, June 6, 2008, which added the all-vehicle article).

Reporting in Minnesota is unpaid. The only program that pays complainants is New York City's.