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Radar detector laws by state

Are radar detectors legal in Florida?

Legal in passenger cars

Legal in a car, but Florida's real story is how strictly police radar evidence is tested and the 2023 school-zone cameras.

By I Go Cars ·

The answer for Florida drivers

Yes. Radar detectors are legal in private passenger vehicles in Florida, because no Florida statute prohibits them. Drivers of commercial motor vehicles are the exception, and that exception comes from federal law rather than from Tallahassee.

The conclusion carries medium confidence for a reason worth stating: a ban's absence cannot be proven by citing one section, only by finding none in the code. The two jurisdictions identified nationally that forbid detectors in passenger cars are Virginia and Washington, D.C. Florida legislators have left detectors alone; what they have regulated, in unusual detail, is the equipment police use and the evidence it produces. That is where most of the Florida-specific law on this subject sits.

Mounting a detector on the windshield

Placement is governed by Fla. Stat. § 316.2004(2)(b), which provides that no person shall drive with "any sign, poster, or other nontransparent material upon the front windshield, side wings, or side or rear windows of such vehicle which materially obstructs, obscures, or impairs the driver's clear view of the highway or any intersecting highway." The test is material obstruction, so a small unit placed low on the glass or on the dashboard is treated differently from one in the driver's sight line.

A violation is a noncriminal traffic infraction, punishable as a nonmoving violation under chapter 318, according to § 316.2004(3). Section 318.18(2) sets the base penalty for nonmoving violations at $30. Court costs and local add-ons vary by county and are not included in that figure.

Commercial vehicles and jammers

Florida has no detector statute of its own for trucks. The governing rule is federal: 49 CFR 392.71 bars a driver from using a radar detector in a commercial motor vehicle, or operating one equipped with a detector, and bars carriers from permitting it. For these purposes, 49 CFR 390.5 counts vehicles of 10,001 pounds or more in interstate commerce as commercial motor vehicles.

Jammers sit in a similar gap at the state level. No enacted Florida jammer law was found. Senate Bill 1982 of 2010 would have created a § 316.1907 against jamming "radar, laser, or other" speed devices, but it died in the Transportation Committee in April 2010. Federal law still applies to radar jammers, which transmit radio signals: the FCC treats devices that interfere with police radar as prohibited jammers. Laser jammers emit light rather than radio waves, so that prohibition does not reach them, and no Florida statute addresses them as of October 2026.

How Florida regulates police speed devices

Florida's speed-measurement law has two layers: statutes that set the conditions for using a device, and an administrative rule chapter that sets the technical standards.

The statute: § 316.1905

Any speed device a peace officer uses must be of a type approved by the Department of Highway Safety and Motor Vehicles (DHSMV) and must be tested at least once every six months. Officers who operate a visual average speed computer device (a VASCAR-type unit that calculates speed from the time a vehicle takes to cover a measured distance) must first be certified by the department. A signed test certificate creates a presumption that the device was working, and the accused may require the officer who operated the device to appear and testify.

The rules: Fla. Admin. Code Chapter 15B-2

The implementing rules are in Chapter 15B-2, "Speed Measuring Devices," issued by DHSMV. Some older references point to Chapter 11A-1; the current chapter is 15B-2. It contains:

  • minimum design criteria for radar (15B-2.0082);
  • radar accuracy tests (15B-2.009);
  • standards for average speed calculators, speedometers and time measurement devices (15B-2.0101, 15B-2.011, 15B-2.012);
  • the list of approved speed measuring devices (15B-2.013); and
  • laser design criteria, checks and tests (15B-2.014 through 15B-2.016).

Rule 15B-2.016 requires laser devices to be tested at intervals not exceeding six months, by a Florida-registered professional engineer or by a technician holding an FCC General Radiotelephone Operator License or APCO, PCIA or NARTE certification.

When radar evidence is admissible: § 316.1906

Section 316.1906(2) is the most consequential provision on this page for anyone contesting a ticket. Radar speed evidence is inadmissible unless every one of these conditions is met:

  • the officer completed the radar course of the Criminal Justice Standards and Training Commission;
  • the officer made an independent visual determination that the vehicle was speeding;
  • the citation was written where conditions permitted the speed to be clearly assigned to a single vehicle;
  • the radar had no automatic speed locks and no audio alarms, unless they were disconnected;
  • the audio Doppler (the audible tone that tells the operator how strong and clear the returned signal is) was engaged; and
  • the unit met DHSMV's minimum design criteria.

For evidence purposes, § 316.1906(1)(e) defines "radar" to include "any laser-based or microwave-based speed-measurement system," so the same framework reaches lidar. The belief that a radar number alone convicts is wrong in Florida: the statute requires a trained officer's own visual judgment as well.

Aircraft enforcement under § 316.1905(2)

Florida's statute expressly contemplates speed enforcement from the air. Section 316.1905(2) allows an officer to arrest on speed information relayed "from a fellow officer stationed on the ground or in the air operating such a device." The arresting officer need not be the one who measured the speed.

Whether the Florida Highway Patrol currently runs aerial speed operations is not established by an official source; no current FHP or DHSMV page describing them was found, though news outlets have reported on the practice. Because air timing measures how long a car takes to pass between points and does not beam anything at it, a detector cannot sense it. That is an inference from how the method works rather than a sourced finding.

School-zone speed cameras under § 316.1896

Some national summaries still list Florida as having no speed-camera law. That is out of date. Section 316.1896, created by chapter 2023-174, Laws of Florida (HB 657 of 2023), lets a county or municipality authorize a traffic infraction enforcement officer to issue camera citations in school zones for speeds more than 10 mph over the limit. The cameras operate from 30 minutes before to 30 minutes after the start of a breakfast program, the start of the school session and the end of the school session, and for exceeding the limit by more than 10 mph throughout the session.

Before installing a system, the local government must adopt an ordinance, consider traffic data at a public hearing and find that the school zone "constitutes a heightened safety risk" under § 316.008(9)(c). The fine is $100 under § 318.18(3)(d), divided among general revenue, the local government, an FDLE training fund, the school district and a crossing-guard program. Under § 322.27, no points may be imposed and the violation may not be used to set insurance rates. Systems must self-test at least every 30 days and receive an independent calibration at least every 12 months. Notices go out within 30 days, and an owner may request a hearing within 30 days without paying first. Which jurisdictions have switched cameras on was not verified for this page.

This page summarizes Florida statutes and rules as published in October 2026 and is not legal advice. Consult the current text on the Florida Legislature's statutes site before relying on it.

Frequently asked questions

Are radar detectors legal in Florida?

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

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

Yes, provided it does not materially obstruct, obscure or impair your clear view of the road. Fla. Stat. § 316.2004(2)(b) prohibits nontransparent material on the windshield that does. A violation is a noncriminal nonmoving infraction with a $30 base penalty under § 318.18(2), before county court costs and local add-ons.

Are laser jammers legal in Florida?

No Florida statute bans laser jammers as of October 2026. A 2010 bill, SB 1982, would have outlawed jamming radar and laser speed devices but died in committee. Radar jammers are another matter: because they transmit radio signals, they are illegal under federal FCC rules in Florida and every other state.

Does Florida have school zone speed cameras?

Yes, where a county or city chooses to adopt them. Since 2023, Fla. Stat. § 316.1896 has allowed local governments to ticket drivers going more than 10 mph over the limit during set school-zone windows, after passing an ordinance and finding at a public hearing that the zone poses a heightened safety risk under § 316.008(9)(c).

How much is a school zone speed camera ticket in Florida?

The fine is $100 under Fla. Stat. § 318.18(3)(d). Section 322.27 provides that no points may be imposed for the violation and that it may not be used for setting motor vehicle insurance rates. The registered owner receives the notice by mail and may request a hearing within 30 days without paying first.

Does Florida use planes to catch speeders?

Florida law allows it. Fla. Stat. § 316.1905(2) lets an officer arrest based on speed information relayed by a fellow officer "stationed on the ground or in the air" operating a speed device. No current official Florida Highway Patrol page describing aerial speed operations was found, so how often it happens today is unconfirmed.

Can a Florida radar ticket be thrown out?

It can if the officer did not meet § 316.1906(2). Radar evidence is inadmissible unless the officer was trained, made an independent visual estimate, could assign the speed to one vehicle, used a unit without auto-lock with audio Doppler on, and used an approved device. The accused may also require the operating officer to testify under § 316.1905(3)(c).

Sources

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