• In New Hampshire not more than four lights may be lighted at one time on in front of a vehicle, being a headlamp or an auxiliary lamp or spotlamp, that projects a beam with an intensity brighter than 300 candlepower.
  • Blue colored lights and flashing lights are generally prohibited.
  • No headlamp shall be used unless it is equipped with a proper lens or other device designed to prevent glaring rays. Any vehicle 80 inches or more in width, may be equipped with not more than 5 identification lamps showing to the front which shall emit an amber or white light without glare and with no more than 3 identification lamps showing to the rear which shall emit a red light without glare.
  • In addition to headlights and tail lights, vehicles in New Hampshire are allowed to have additional lighting (see below).
  • New Hampshire headlights laws

    Lighting laws in New Hampshire

    2015 New Hampshire Revised Statutes

    Title XXI - MOTOR VEHICLES

    Chapter 266 - EQUIPMENT OF VEHICLES

    Department of Transportation Department of Transportation


    Section 266:31 - Front Lights.

    Every motor vehicle driven during the period from 1/2 hour after sunset to 1/2 hour before sunrise, and whenever rain, snow, or fog shall interfere with the proper view of the road so that persons and vehicles on the way are not clearly discernible at a distance of 1000 feet ahead, shall display at least 2 lighted lamps on the front; provided, however, that one suitable lighted lamp on the front of a motorcycle shall be sufficient. The headlamp shall throw sufficient light ahead within the travelled portion of the way to make clearly visible all vehicles, persons, or substantial objects within a distance of 200 feet, except that the headlamps of motorcycles shall be sufficient if they make clearly visible objects within a distance of 150 feet. No headlamp shall be used unless it is approved by the director and is equipped with a proper lens or other device designed to prevent glaring rays. All headlamps on every motor vehicle shall be located at a height of not more than 54 inches nor less than 24 inches from the ground on an unladen vehicle.

    Colors Restrictions Colors Restrictions


    266:78-b Blue Lights Restricted to Law Enforcement and Emergency Response.

    I. No person other than a sworn law enforcement officer with power of arrest shall operate a vehicle equipped with blue colored lights, except in the case of a service technician driving the vehicle in connection with servicing or maintaining the vehicle or as provided under paragraph II.

    II. No person other than a sworn law enforcement officer with power of arrest or an emergency response employee or volunteer of a city, town, or village district or the federal government or an employee of a private ambulance service contracted with a city, town, or village district shall operate a vehicle equipped with a rear-facing blue colored light, except in the case of a service technician driving the vehicle in connection with servicing or maintaining the vehicle.

    266:78-i Use of Amber Lights.

    Vehicles authorized to use amber colored warning lights authorized by RSA 266:78-h may only illuminate the warning lights when their duties require them to be stopped or parked on or immediately adjacent to a way at a road, water, or sewer line construction or maintenance site in a manner that may impede or cause a hazard to traffic, when actively engaged in the delivery of United States mail, or when actively engaged in snow removal or ice treatment or when entering or leaving a way during plowing operations, or during repair or placement of official traffic control devices, pavement marking, or escorting an oversize load or slow moving vehicle, or in the case of wreckers and emergency road service vehicles when maneuvering through congested traffic to reach a disabled vehicle, providing roadside service, loading or unloading a vehicle, or when transporting a disabled vehicle.

    Equipment Restricted Equipment Restricted


    266:43 Reflectors.

    Every new motor vehicle sold and driven upon a way, other than a tractor truck, shall carry on the rear, either as a part of the tail lamps or separately, 2 red reflectors, except that every motorcycle, moped and motor-driven cycle shall carry at least one reflector.

    266:44 Tail Lamp and Reflectors.

    Every motor vehicle and trailer or any combination of vehicles, when on the ways of this state at night, shall have on the rear thereof, and to the left of the axis thereof, one lamp, displaying a red light visible for a distance of at least 1000 feet to the rear of such vehicle, and a white light illuminating the registration plate of such vehicle so that the characters thereon shall be visible for a distance of at least 50 feet.

    266:45-a Additional Lighting Equipment.

    Any vehicle 80 inches or more in overall width, if not otherwise required by this chapter, may be equipped with not more than 5 identification lamps showing to the front which shall emit an amber or white light without glare and with not more than 3 identification lamps showing to the rear which shall emit a red light without glare. Such lamps shall be grouped in a horizontal row, with lamp centers spaced not less than 6 nor more than 12 inches apart, and mounted on the permanent structure of the vehicle as close as practicable to the vertical center line. Any vehicle may be equipped with one or more side marker lamps, and any such lamp may be flashed in conjunction with turn or vehicular warning signals. Lamps allowed by this section shall be of a type approved by the director.

    266:78-e Other Flashing Lamps Prohibited.

    Only authorized emergency vehicles, including law enforcement, fire, and emergency medical services vehicles, and state department of transportation vehicles engaged in construction or maintenance activities, may be equipped with a device that provides for alternate flashing of headlamps.

    Other Rules Other Rules


    Headlights: 2 minimum

    • minimum height: 24 inches
    • maximum height: 54 inches

    Tail lights: 2 minimum

    • minimum height: 20 inches
    • maximum height: 72 inches

    Spot lights: 2 maximum

    • minimum height: n/a
    • maximum height: n/a

    Auxiliary driving lights: 3 maximum

    • minimum height: 12 inches
    • maximum height: 42 inches

    Notice! This page contains only a list of recommendations. Kensun does not give any LEGAL advice. Please be sure to refer to a lawyer, local DOT or Police Department for further assistance.