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6 Best Radar Detectors – (Reviews and Buying Guide 2021)

According to a conservative estimate, more than 125,000 drivers are slapped with a speeding ticket in the US every day. Most people won’t find anything strange about this statistic until they come to know that more than 80% of drivers claim to be aware that over-speeding can cause road accidents.

In other words, even though 8 out of 10 drivers know that driving too fast can be fatal, speed violations still happen frequently. Whether drivers do that knowingly or unknowingly is beside the point here. What matters is that they put their and others’ lives at risk by over-speeding.

Feeling guilty? The best radar detectors will force you out of your guilt. These devices warn you about a speed camera whenever they detect one is in the vicinity. You can count on the information they provide to not only slow down but also (potentially) save lives.

Seems like a fair deal? Then check out our radar detector reviews.

Best Radar Detector Reviews

1. Uniden R7 Extreme Long Range Radar Detector

Uniden R7 Extreme Long Range Radar DetectorThe Uniden R7 radar detector is easily one of the best models on the market. It offers the longest range of any windshield mount detector in this review. You should take a long, good look at the R7 if you demand the highest level of protection. It does more than enough to justify its asking price.

This detector comes with a bunch of other useful features as well. It offers arrows using which you can find out on which side of yours the threat lies. Its GPS allows the R7 to memorize the areas where it encounters false alerts to stop the detector from needlessly making noises along your regulate commute.

Also on offer is blind-spot monitoring (BSM). This detector can find out whether the signals it is receiving are coming from a speed-checking gun or a blind spot monitoring system on a nearby vehicle. Uniden keeps on sending firmware and software updates to this model to ensure it never goes out of date.

2. Escort MAX360C Laser Radar Detector

Escort MAX360C Laser Radar Detector_The Escort Max 360c is one of those radar detectors which don’t charge a king’s ransom for their high-end features. It is equipped with a built-in Wi-Fi using which this system sends real-time threat alerts to your Android and Apple devices via the Escort Live app.

Apart from alerting you of a speed camera, the app pinpoints red light and speed camera locations. It also lets you know of the speed limit of the highway on which you might be traveling. You can also count on the app to deliver regular traffic updates. Also on offer is 360-degree speed-ticket protection.

This detector detects not only radar but also laser speed cameras. It is equipped with an IVT filter that reduces fake alerts from moving in-vehicle technologies. The Auto Learn technology of this unit allows it to learn and automatically reject false alarms.

3. Uniden R3 Extreme Long Range Laser/Radar Detector

Uniden R3 Extreme Long Range DetectorAt the time that it was first introduced to the market, the Uniden R3 possessed an unrivaled range. The advent of the abovementioned R7 detector might have taken that tag away from this product. However, it still possesses a plethora of features to deserve your attention.

This competitively-priced model offers dual-end functionality by detecting both laser as well as radar signals. It contains built-in GPS to locate and automatically mute false alerts. Uniden has preloaded this detector with red light and speed camera locations and regularly sends firmware updates.

It delivers visual warnings to make sure that you keep your eyes on the road. The multi-color LED display ensures that you can easily read the display in low light conditions. Its advanced false alert filtering feature eliminates false alerts from collision avoidance systems and blind-spot monitoring systems.

4. Escort Max 360 Laser Radar Detector

Escort Max 360 laser radar detectorIn case you are wondering, the Max Escort Max 360 offers many of the features that we have already discussed you can find in the 360c. The main difference between both is that this model doesn’t have a built-in Wi-Fi. Instead, it uses Bluetooth to pair with your smartphone and for cloud integration.

This device also comes with the Escort Live app that delivers all the data you need to remain free of speed tickets on the road. Its rear and front-facing antennas provide 360-degree protection, and the digital signal processor (DSP) offers alerts in lightning-fast time.

Lastly, one of the best features of this detector is its Auto Learn technology. Supported by built-in GPS and ITV filtering, this technology reduces false alerts by learning more about the sources of false alert signals as you drive around. It then uses that information to get better at filtering false alerts.

5. Cobra RAD 450 Laser Radar Detector

Cobra RAD 450 Laser Radar DetectorIf you came here looking for an inexpensive yet reliable radar detector, you wouldn’t go wrong with the Cobra RAD 450. It doesn’t offer GPS capability but masks its shortcomings by detecting all the three bands that are used by law enforcement – X-, K-, and Ka-band.

Its detection range of 2 miles on a straight road isn’t much but should still give you enough time to take your feet off of the accelerator. Also on offer is an IVT Filtering system, which ensures that you hear only those alerts which you need to hear by eliminating false alerts.

This product’s OLED display has high-contrast colors that make the numbers easy to read. The controls on its panel are labeled clearly and are, therefore, easy to use. However, as Cobra has made the controls multi-functional to save spacer, mastering them will require a steep learning curve.

6. Radenso SP Radar Detector with False Alert Filtering

Radenso SP Radar Detector with False Alert FilteringMost detectors you see on the market have displays that don’t remain readable on sunny days. The Radenso SP Radar is different. Its display contains large alphanumeric characters set against a black background. That makes it possible even for passengers sitting on the back seat to read them.

This filter comes with advanced false alert filtering. It analyzes the DNA of the sources of the radar signals to prevent signals coming from the blind spot, radar cruise control, and traffic speed sensor systems from forcing the detector to start issuing alerts.

Aside from warning you, the voice alerts of this model also let you know which radar band the detector is detecting. This is a brilliant feature as, assuming that the radar detects the X band (which is found in less than 1% of law enforcement equipment), you can continue to speed on as it is most likely a fake alert.

Radar Detector Buying Guide

Whether you’re investing in a radar detector to save money on speeding tickets or you’re a responsible citizen who always wants to remain on the good side of the law, there are several questions you need to ask yourself before purchasing this device.

Once you’re done answering those questions, you’d then need to move on to the features that you might ideally want in a radar detector. In this section, we’re going to make sure that you tick both these boxes with assurance.

best radar detectors

5 Considerations When Buying a Radar Detector

Here are some of the essential questions you need to ask yourself before you start searching for a radar detector:

  1. Where you’ll be using your radar detector?

    If you’re mainly going to use your radar detector on the highway, you can invest in an inexpensive model. It will deliver all the goods you’re looking for without blowing a hole in your pocket. However, you may have to invest in an expensive model if you intend to use your radar detector in the city.

    Wondering why that’s the case? When you’re driving around the city, you’ll be most likely passing around sensory systems emitting the same signals (or signals with the same frequency) as those coming out of speed checking cameras, such as automatic sliding doors at your local supermarket.

    The signals emitted from these devices are termed as ‘fake signals.’ Cheap radar detectors can’t discriminate between these signals and the ones coming out of a speed-checking camera. That makes them extremely prone to giving false alerts.

    Expensive radar detectors, on the contrary, have features such as GPS functionality, directional indicators, and ‘’smart technologies” that lets them set-apart fake signals from the real ones. This allows them to offer two modes – “city mode” and “highway mode” – to reduce the likelihood of false alarms.

  2. How long do you plan on using it?

    This will help you choose between a model that receives frequent firmware updates and the one which doesn’t receive any post-sale support from its manufacturer. Models that get frequent firmware updates keep up with the infrastructure, thereby staying current for longer. Those who don’t go out of fashion quickly as they won’t be able to warn you about a newly-installed camera.

  3. What type of radar detector do you want?

    There are three types of radar detectors on the market: corded, cordless, and remote. The former come with suction cups using which you can mount them on the shield. You can easily transport them between multiple vehicles of the same manufacturer or even different manufacturers.

    Corded detectors sit on top of your dashboard, don’t come with suction cups, and therefore provide cleaner installation. You’d have to keep them plugged in all the time, sure, but this means that you won’t have to worry about their battery timing.

    Remote mount-detectors, unlike their corded and cordless counterparts, can’t be transported between vehicles. They are permanently mounted to your car by a professional mechanic. But their shielded installation place means they are less vulnerable to theft.

  4. Do you prefer audio or visual alerts?

    Radar detectors that give off voice alerts warn you about an upcoming speed checking camera without forcing you to take your eyes off the road. Those that rely on visual alerts to warn you, meanwhile, start flashing lights whenever they detect a signal in their range. Their quiet operation is preferred mostly by parents who drive with a baby or drivers who prefer to go about their commute in silence.

  5. How will the detector attach to your vehicle?

    Some units are designed to sit on your vehicle’s dashboard, whereas others attach to its windscreen via suction cups. While the former are hard to adjust and can be hard to see, windscreen detectors might obstruct your vision if their size is too big. At the same time, they are easier to see. So you might want to choose a windshield detector that is neither too small nor too big.

6 Important Radar Detector Features and Specs

Following are the features and specs which are a must-have for the top-rated OBD2 scanners:

  1. Considerable range:

    The range of the detector should be big enough to warn you about an approach patrol car in time. If it doesn’t, and the speed-checking camera detects your car’s speed before the detector detects its presence, it defeats the purpose of having a detector.

  2. Extreme sensitivity:

    Speed-checking equipment used by traffic police mostly use three signals bands (X, K, and KA) to locate and penalize over-speeding. Make sure the product you’re looking at is sensitive enough to pick up all these three bands.

  3. GPS:

    Radars that are GPS-powered cut-down on false alerts by logging frivolous signals each time your car drives past them. It also memorizes the exact location of false alerts. This saves your detector from going off the next time you drive past fake signals.

  4. Easy-to-read display:

    If you’re going to choose a visual detector, make sure it comes with a multi-color display. The colors used should be bright enough, and the letters should be big enough to display the data in bright sunlight.

  5. 360-degree protection:

    Models that don’t provide this feature protection won’t alert you about speed tracking from behind or the sides. They only warn you about the speed traps that are lying ahead. That’s why you should go for detectors that offer 360-degree protection.

  6. Smartphone compatibility:

    The majority of top-rated detectors come with a free app for Android and Apple devices. The app stores the exact location of speed-trackers once you have driven past them. It also alerts you about any approaching speed-ticket issuing red light camera. You can also consult it to know more about your local speed limits.

radar detector buying guide

Types of Detectors

There are two types of detectors available on the market:

  1. Radar Detectors

    These detectors detect the form of electromagnetic energy that travels at the speed of light. The signals that they detect bounce off of objects, thereby creating what is known as returned pulses. Radar detectors tell when these signals have hit their antennas.

    The better the design of the antenna (and other hardware inside the detector), the easier it will be for the detector to detect signals from a long distance. However, these products aren’t able to detect signals emitted from newer technology.

    Aside from that, cheap radar detectors are very prone to giving off false alarms. They can’t discriminate between signals coming out of a cop’s speed-checking gun and those emanating from a nearby vehicle’s blind spot monitor. That’s why we always recommend high-end models to our readers.

  2. Laser Detectors

    Provided you have ever gone shopping for a laser detector – or checked their price on the internet out of curiosity – you might recall that they cost twice as much as their radar counterparts. That’s mainly because they detect both the radar as well as laser signals.

    Laser detectors only need half a second to locate over-speeding, compared to 2 to 3 seconds for a radar detector. Also, since a laser beam is narrower than a radar beam, it can more accurately pinpoint a specific vehicle.

    The disadvantages of laser detectors are also important to consider. Apart from being astronomically expensive, laser guns can’t be used from behind a glass or from a moving vehicle. You have to have a very steady hand – or a tripod – to accurately aim them.

What is a Radar Detector?

Radar detectors are electronic devices that motorists use in their vehicles to detect if law enforcement is checking their speed. These devices work by identifying the frequency of signals that are emitted from speed checking cameras, red traffic lights, and speed checking guns.

Common Radar Detector Terms

Here are some of the terms you might see mentioned on your radar detector’s packing:

  • Anti-Laser Priority (ALP):

    ALP is a technology that detects speed-checking guns and jams signals coming out of them. It should be unsurprising to note that because of this feature, they are illegal in some states.

  • Radar Detection Rejection (RDR):

    Models that have this feature can filter out false alerts more effectively than those who don’t. So you can travel with the assurance that your local hypermarket’s scanner won’t be able to force your detector to go off.

  • Blind Spot Monitor (BSM):

    Many of the latest cars come with blind-spot monitors that emit signals of their own that can interfere with the radar detector, causing it to give off a false alarm. BSM filters most such false signals, but not all, as those coming from GM vehicles are hard to filter.

  • Digital Signal Processing (DSP):

    Radar detectors that are capable of processing digital signals are equipped with a built-in microchip. They use that microchip not only to recognize but also to prioritize bands that are generally used by law enforcement authorities around the world.
    Tip: Want to know more about equipment law enforcement use? Then check out our police scanner buying guide.

  • Safety Warning System SWS:

    Some highway authorities use radar to promote the safety of their drivers by transmitting signals to warn you of accidents, railroad crossings, or potentially hazardous road conditions. On detecting SWS signals, your radar detector will emit an alert signal distinct from the signal it gives off for speed detection.

  • Selectivity:

    Different from the sensitivity of your detector, a radar’s selectivity indicates its ability to detect speed-checking cameras while ignoring the signals coming from other devices such as microwaves and automatic garage door openers.

choosing a radar detector

Are Radar Detectors Legal?

Radar detectors are a godsend for drivers who wish to keep their eyes on the road at all times, rather than alternating between glancing at the speedometer, any speed limit signboards, and their car’s rearview mirror in search of blinking lights.

Unfortunately, despite their innumerable benefits, radar detectors are illegal in some states. That’s because the legislation around owning a radar detector is under the purview of states. The Federal government has left it to them to devise laws using which states can allow or prohibit their usage.

The states which have banned radar detectors have done so for one simple reason: they make drivers careless on the road. The drivers do not need to be always on the lookout for Police interceptors as they know that their electronic savior will come to their rescue.

That might hear like a perfect excuse for police officers to stop repeated speed offenders on the road and check out their car for a detector, but that’s not the case. More than 2/3rd of US states allow the usage of radar detectors in personal vehicles.

What states are radar detectors illegal?

According to the American Automobile Association (AAA), only two US states – Virginia and Washington DC – bar the usage of radar detectors in passenger cars. However, in commercial vehicles, you cannot use a radar detector anywhere in the United States.

radar detector reviews

FAQs and Answers

  • Q: Can you use radar detectors on commercial vehicles?
    A: According to the United States Department of Transportation Rule, you cannot use radar detectors on commercial vehicles in any US state.
  • Q: Why didn’t my radar detector go off?
    A: Here are some of the reasons why that might have happened:
    – The police officer might just be holding the speed checking gun in his hand and not actively running the radar.
    – You have an older radar detector that doesn’t detect new radars due to the advancements in detection technology.
    – LASER might have been used to measure the speed of your vehicle instead of RADAR.
  • Q: Does a police officer know if you have a radar detector?
    A: Provided they have a Radar Detector Detection (RDD) device on them, the police officers can detect whether your car has a radar detector. These are devices that measure signals emitted from radar detectors.
    Fortunately, in recent years, detector manufacturers have started equipping their model with technologies that let them beat the RDD. So it’s less likely that your radar detector will get caught by an RDD.

Check our car enthusiast guide to see if you’ve missed anything important!

You can check also : GPS for a Cars


Having said all that can be said about the best radar detectors, we just want to add one more thing before wrapping up this article. All the products that you saw in this review are trusted by hundreds, if not thousands of drivers like you.

These were the people who invested their money in these detectors. They then used it on the road to evade cops who were out there to get them. That gave them ample time to find out any flaws, if any existed in these products and mention them.

However, as you can see by scrolling back to our radar detectors reviews section, there isn’t much negative that can be said or written about these models. You can, therefore, count on them to make your life on the road (almost) ticket-free.

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