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Radar detector laws by state

Are radar detectors legal in Pennsylvania?

Legal in passenger cars

Detectors are legal, and Pennsylvania is the state where most local police are barred from using radar or lidar at all.

By I Go Cars ·

The answer for Pennsylvania drivers

Yes. Radar detectors are legal in private passenger vehicles in Pennsylvania, because no Pennsylvania statute prohibits them. Commercial motor vehicles are the exception, under federal rather than state law.

What sets Pennsylvania apart is not its treatment of detectors but its treatment of police. Under 75 Pa.C.S. § 3368, radar and lidar may be used only by members of the Pennsylvania State Police or as part of an automated speed enforcement system. Municipal officers, who patrol most of the state's local roads, time speed with other equipment. That single rule changes what a detector can and cannot tell a driver, and it shapes nearly every other section of this page.

The legality conclusion rests on the absence of a ban, which is why the underlying research rates it at medium confidence. Virginia and Washington, D.C. are the only jurisdictions identified that prohibit detectors in passenger cars.

Section 3368: radar and lidar for the State Police only

The statute is explicit. Section 3368(c)(2) provides that "electronic devices such as radio-microwave devices, commonly referred to as electronic speed meters or radar, may be used only as part of an automated speed enforcement system or by members of the Pennsylvania State Police." Section 3368(c)(5), added by Act 86 of 2018, applies the same limit to "light detection and ranging devices, commonly referred to as LIDAR" (laser speed guns that time pulses of reflected light).

Everything else is open to any officer:

  • Pacing. Under § 3368(a), any police officer may time a vehicle with a speedometer-equipped vehicle over a distance of not less than three-tenths of a mile.
  • Mechanical or electrical timing devices. Section 3368(c)(1) allows their use by a police officer.
  • Two-point devices. Section 3368(c)(3) allows any police officer to use devices that time a vehicle between two points on the road surface using two sensors, and devices that calculate average speed between any two points.

Pennsylvania has repeatedly considered bills to let local police use radar, and the Senate has passed versions, according to news coverage. The consolidated text of § 3368 read on October 29, 2026 still limits radar and lidar to the State Police and automated systems, so no such bill had become law as of that date.

ENRADD, VASCAR and the approved-device list

ENRADD and VASCAR are the names most often attached to Pennsylvania local enforcement, but neither appears in the statute. They are examples of the § 3368(c)(3) device types listed in PennDOT's approved-device notice, published at 48 Pa.B. 8007 on December 29, 2018. That notice groups approved equipment this way:

  • Radar units for State Police use, such as the BEE III, Falcon HR, Genesis-II Select, Stalker Dual and Eagle Plus;
  • two-sensor nonradar devices, such as the ENRADD Model EJU-91, TK 100 and Speed Chek;
  • average-speed nonradar devices, such as VASCAR-plus, VASCAR-plus III, V-SPEC and Tracker by Patco; and
  • stopwatches, approved individually by serial number.

The device names date from that 2018 notice; a later PennDOT list was not checked. The governing regulations are 67 Pa. Code Chapter 105. The familiar claim that "municipal police may not use radar, so they use VASCAR or ENRADD" is correct as to radar and lidar, with the qualification that those two products are approved examples of permitted categories rather than devices the law names.

The practical consequence for detector users follows from how these methods work. Two-sensor timing, average-speed computers, stopwatches and pacing do not transmit anything toward the target vehicle, so a radar detector has nothing to sense. On roads patrolled by municipal departments, a detector's warning value is therefore lower than on State Police-patrolled highways. That is an inference from the statute, not a measured finding.

Built-in margins, calibration and sign distances

Section 3368 also contains protections for drivers that most states leave to court practice.

  • Speed margins. Under § 3368(c)(4), no conviction may rest on radar or (c)(3) device evidence unless the recorded speed is at least 6 mph over the limit. For (c)(3) devices where the limit is under 55 mph, the recorded speed must be at least 10 mph over. Neither margin applies in a school zone or an active work zone.
  • Calibration. Radar must have been tested for accuracy within one year before the violation, and other devices within 60 days; a station certificate is prima facie evidence (sufficient proof unless rebutted). Lidar must be calibrated and tested at least every 365 days under § 3368(f)(2).
  • Sign distance. Under § 3368(e), timing devices may not be used within 500 feet after a sign marking a lower speed limit, except for school-zone, bridge, hazardous-grade and work-zone limits.

The current text is available from the Pennsylvania General Assembly.

Windshield mounting, trucks and jammers

Placement falls under 75 Pa.C.S. § 4524. Subsection (c) bars driving with any object "hung from the inside rearview mirror or otherwise hung, placed or attached in such a position as to materially obstruct, obscure or impair the driver's vision through the front windshield or any manner as to constitute a safety hazard," and subsection (a) bars signs and nontransparent material on the windshield that materially obstruct the view. Section 4524 states no penalty, so § 6502(a) applies: a summary offense with a $25 fine, plus court costs that the statute does not state.

Pennsylvania adds no detector rule of its own for trucks. Federal regulation 49 CFR 392.71 forbids using a detector in, or driving, an interstate commercial motor vehicle equipped with one.

No Pennsylvania jammer statute was found, and § 3368 does not mention jammers or detectors. Radar jammers, which broadcast radio interference, remain barred nationwide by the Federal Communications Commission. Laser jammers fall outside that radio-frequency prohibition, and no state law addresses them as of October 2026.

Speed cameras: work zones and Philadelphia

Section 3368 lets any agency use radar or lidar as part of an automated speed enforcement system, and three statutes authorize such systems.

Work zones (§ 3369)

PennDOT and the Pennsylvania Turnpike Commission run cameras in active work zones on federal-aid highways. A violation is 11 mph or more over the posted work-zone limit. The first offense draws a written warning, the second $75, and the third and later $150. There is no criminal conviction, no points and no insurance surcharge, and warning signs must stand at least 1,000 feet before the zone. Act 38 of 2023 deleted the expiration subsection, making the program permanent.

Roosevelt Boulevard (§ 3370)

Philadelphia may enforce U.S. Route 1 between Ninth Street and the Bucks County line, and Act 38 of 2023 allows up to five more corridors after an engineering study and public comment. The threshold is 11 mph over, the fine is $150 unless the ordinance sets less, no fines are issued in the first 30 days, no frontal images are taken, no points apply, and revenue is capped below 2% of the city's annual budget.

Philadelphia school-zone pilot (§ 3371)

Also added by Act 38 of 2023, the pilot covers no more than five active school zones with posted limits of 15 mph or less, at 11 mph or more over, under the same no-points rules. It expires December 31, 2029.

This page summarizes Pennsylvania statutes as published in October 2026 and is not legal advice; confirm the current text before relying on it.

Aircraft enforcement

No official source documents Pennsylvania State Police speed timing from aircraft. The Aviation Section, which operates six helicopters and three airplanes statewide, lists missions such as assisting in vehicle pursuits and photographing crime and traffic incident scenes, but not speed enforcement. Claims that Pennsylvania clocks speeders from the air should be treated as unconfirmed.

Frequently asked questions

Are radar detectors legal in Pennsylvania?

Yes, in passenger vehicles. No Pennsylvania statute bans a radar detector in a private car, and the state adds no rule of its own for trucks. Drivers of interstate commercial motor vehicles are covered by the federal ban in 49 CFR 392.71, which bars using a detector or driving a commercial vehicle equipped with one.

Can local police use radar in Pennsylvania?

No. Under 75 Pa.C.S. § 3368(c)(2) and (c)(5), radar and lidar may be used only by members of the Pennsylvania State Police or as part of an automated speed enforcement system. Municipal officers rely on pacing, stopwatches, two-sensor timing devices and average-speed devices instead. Bills to give local police radar have been debated but were not law as of October 2026.

How do local police in Pennsylvania catch speeders without radar?

They use methods that § 3368 opens to any officer: speedometer pacing over at least three-tenths of a mile, stopwatches, two-sensor devices that time a vehicle between two points on the road, such as ENRADD, and average-speed devices such as VASCAR. PennDOT's 2018 approved-device notice lists these by model; the statute itself names neither brand.

Is there a 6 mph buffer on Pennsylvania speeding tickets?

Yes, for radar and two-point timing devices, with limits. Section 3368(c)(4) bars a conviction unless the recorded speed is at least 6 mph over the limit, rising to 10 mph over for (c)(3) devices where the limit is under 55 mph. Neither margin applies in school zones or active work zones, and pacing is not covered by it.

Can I mount a radar detector on my windshield in Pennsylvania?

Yes, as long as it does not materially obstruct your view through the windshield or create a safety hazard, under 75 Pa.C.S. § 4524(c). A violation is a summary offense. Because § 4524 sets no penalty, the general § 6502 fine of $25 applies, plus court costs that the statute does not specify.

Are laser jammers legal in Pennsylvania?

No Pennsylvania statute addressing laser jammers was found, and the speed-timing law in § 3368 does not mention them. Radar jammers are different: they transmit radio interference and are illegal under federal FCC rules in every state. Because local police mostly use non-emitting timing methods, a jammer would also have nothing to counter on many local roads.

How much is a Pennsylvania work zone speed camera ticket?

The first violation brings a written warning, the second a $75 fine and the third or later $150, under 75 Pa.C.S. § 3369. A violation requires a speed of 11 mph or more over the posted work-zone limit. It is not a criminal conviction, adds no points to the driving record and carries no insurance surcharge.

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