7 Del. Admin. Code § 1145
1100 Division of Air Quality
1145 Excessive Idling of Heavy Duty Vehicles
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This regulation applies to all on-road heavy-duty motor vehicles with a gross vehicle weight rating (GVWR) of greater than 8,500 pounds operating in the State of Delaware.
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The following definitions are applicable to this regulation:
“Emergency vehicle”means any publicly owned and operated ambulance, lifeguard, or lifesaving equipment or any privately owned or operated vehicle which is in response to an emergency call. Any publicly owned vehicle operated by the following persons, agencies, or organizations: (a) any federal, state, or local agency, department, or district employing peace officers for use by those officers in the performance of their duties, and; (b) any forestry or fire department of any public agency or fire department. Any vehicle owned or operated for the purpose of: (a) fighting fires, (b) towing or servicing other vehicles, (c) caring for injured persons, or (d) repairing, maintaining and restoring public utility services necessary for the health or safety by any of the following: (1) the state, (2) a bridge and highway district, (3) a municipality and (4) a public or private utility. Any state-owned vehicle used in responding to emergency fire, rescue or communications calls and operated either by the Delaware Emergency Management Agency or by any public agency or industrial fire department to which the Delaware Emergency Management Agency has assigned the vehicle. Any vehicle owned or operated by any department or agency of the United States government when the vehicle is used in responding to emergency fire, ambulance, or lifesaving calls or is actively engaged in law enforcement work. Any emergency vehicle which a permit has been issued by the Superintendent of the Delaware State Police.
“On-road heavy-duty motor vehicle ”means any vehicle with a gross vehicle weight rating (GVWR) of greater than 8,500 pounds which is self- propelled and designed for transporting persons or property, including but not limited to trucks, buses, and farm vehicles.
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Each provision of this regulation shall be deemed severable. If any provision of this regulation is held to be invalid, the remainder shall continue in full force and effect.
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The owner or operator of an on-road heavy duty motor vehicle shall comply with the following operational requirements unless specifically exempted from the operational requirements for these motor vehicles:
No on-road heavy duty motor vehicle shall be allowed to operate for more than three consecutive minutes when the vehicle is not in motion.
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5.11 Any military tactical vehicle engaged in training operations.
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This regulation is enforceable under 7Del.C., Ch 60, §§6005 and 6013. Violators are subject to a penalty of not less than 50 dollars ($50) and not more than 500 dollars ($500) for each offense.