Vermont § 1110 - Prohibited idling of motor vehicles

§ 1110. Prohibited idling of motor vehicles

• (a)(1) General prohibition. A person shall not cause or permit operation of the primary propulsion engine of a
  motor vehicle for more than five minutes in any 60-minute period while the vehicle
  is stationary. (2) Exceptions. The five-minute limitation of subdivision (1) of this subsection shall not apply when: (A) a military vehicle; an ambulance; a police, fire, or rescue vehicle; or another vehicle
  used in a public safety or emergency capacity idles as necessary for the conduct of
  official operations; (B) an armored vehicle idles while a person remains inside the vehicle to guard the contents
  or while the vehicle is being loaded or unloaded; (C) a motor vehicle idles because of highway traffic conditions, at the direction of an
  official traffic control device or signal, or at the direction of a law enforcement
  official; (D) the health or safety of a vehicle occupant requires idling, or when a passenger bus
  idles as necessary to maintain passenger comfort while nondriver passengers are on
  board; (E) idling is necessary to operate safety equipment such as windshield defrosters, and
  operation of the equipment is needed to address specific safety concerns; (F) idling of the primary propulsion engine is needed to power work-related mechanical,
  hydraulic, or electrical operations other than propulsion, such as mixing or processing
  cargo or straight truck refrigeration, and the motor vehicle is idled to power such
  work-related operations; (G) a motor vehicle of a model year prior to 2018 with an occupied sleeper berth compartment
  is idled for purposes of air-conditioning or heating during a rest or sleep period; (H) a motor vehicle idles as necessary for maintenance, service, repair, or diagnostic
  purposes or as part of a State or federal inspection; (I) a school bus idles on school grounds in compliance with rules adopted pursuant to
  the provisions of subsection 1282