the pennsylvania vehicle code, available at the pennsylvania department of transportation website, www.dmv.state.pa.us, and the pennsylvania code (www.pacode.com) include the following provisions on the use of headlights on a vehicle. motorcycles, emergency vehicles and agriculutral equipment have different regulations.
pennsylvania vehicle code
You're reading: Pennsylvania headlight law
chapter 43, section 4302. the operator of a vehicle upon a highway shall display the lighted headlamps and other lamps and illuminating devices required under this chapter for different classes of vehicles, subject to exceptions with respect to parked vehicles, at the following times:
(1) between sunset and sunrise.
(2) any time when the operator cannot discern a person or vehicle upon the highway from a distance of 1,000 feet due to insufficient light or unfavorable atmospheric conditions, including rain, snow, sleet, hail, fog, smoke or smog.
(3) any time when the vehicle’s windshield wipers are in continuous or intermittent use due to precipitation or atmospheric moisture, including rain, snow, sleet or mist.
chapter 43, section 4306. use of multiple-beam road lighting equipment.
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(a) approaching an oncoming vehicle: whenever the driver of a vehicle approaches an oncoming vehicle within 500 feet, the driver shall use the low beam of light.
(b) approaching a vehicle from rear: whenever the driver of a vehicle approaches another vehicle from the rear within 300 feet, the driver shall use the low beam of light.
(c) exception: (1) an emergency vehicle which is equipped with a flashing headlamp system that conforms to regulations promulgated by the department shall be exempt from the provisions of this section only when the vehicle is being used pursuant to the provisions of section 4571(e) (relating to visual and audible signals on emergency vehicles).
(2) nothing in this section shall limit drivers from flashing high beams at oncoming vehicles as a warning of roadway emergencies or other dangerous or hazardous conditions ahead.
(c) headlamp system: a vehicle specified under this subchapter which is driven on highway shall have two- or four-headlamp system. see 75 pa. c.s. §4303 (a) (relating to general lighting requirements).
(1) both lamps in the two-headlamp system shall be of type ii construction consisting of high beam and low beam. one lamp shall be located on each side of front of motor vehicle.
(2) in the four-headlamp system, two lamps shall be of type ii construction and two lamps shall be of type i construction. type i lamps consist of a high beam only. one of each type shall be located on each side of front of the motor vehicle.
(3) the headlamp low beam minimum candlepower shall not be less than 7,500.
(4) the headlamp high beam minimum candlepower shall not be less than 10,000.
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(5) a headlamp shall be aimed to comply with inspection procedure of this subchapter.
(d) total candlepower: the total candlepower for headlamps and auxiliary lamps shall not exceed 150,000.
(g) condition and position of lamps: lamps shall be properly fastened; direct light properly; be of a color not contrary to tables ii-iv; and not be so obstructed by a screen, bar, auxiliary equipment or a device as to obscure, change the color of or obstruct beam.
chapter 153 appendix a, table iii, required motor vehicle lighting equipment
headlamps: two white, 7-inch, type 2 headlamp units, or two white, 51/4-inch, type 1 headlamp units and two white, 51/4-inch, type 2 headlamp units.
table iv, location of required equipment
headlamps: type 1 headlamps at the same height, one on each side of the vertical centerline; type 2 headlamps at the same height one on each side of the vertical centerline; as far apart as practicable.