This model is affordable and provides 360° laser protection. Detector features 2 operating modes. It is able to hide itself from some radar detector detectors. Voice alerts allow for a hands-free driving experience.
Some complaints of false alerts.
Optimized to ignore false detections. Has excellent range. English and Spanish voice options. Multiple radar and laser detection modes. Model is especially affordable. Includes mounting kit.
Noisy, but you will never miss an alert.
Pulls live information of noted speed and red light cameras from the internet for added protection. Has forward and rear radar antennas. Threat detection is accurate. It's easy to install.
The MAX 360c is a pricey radar detector.
Actively warns against a wide range of traffic hazards. Bright display points out radar detections with a bold red arrow, and alerts are audible. It has a wide detection range and is easy to install.
The R7 is a steep investment.
We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.
In almost all states, unless you are a commercial driver, radar detectors are legal devices that you can have in your vehicle. However, it is always prudent to double check, as laws may change. The battle with radar detectors is like an arms race: the best models are the most effective.
Your primary consideration is deciding if the radar detector will be for multiple cars. If so, you will need a portable model. If not, a dash-installed unit is usually the better option. You'll want a sensitive detector with an adjustable antenna that can discriminate against false alarms and is WiFi- or Bluetooth-enabled.
A radar detector is an in-car device that identifies many of the radar guns used by law enforcement to measure the speed of a passing car. Using the Doppler shift, a radar gun measures the distance and speed between the electromagnetic beam sent out by the handheld gun to a passing car and then back to the device.
Depending on the sophistication of the device, a radar detector can alert a driver via a panel that signals the presence of police radar as well as the posted speed limit and the car’s current speed. Newer, high-end radar detectors can also send out jamming signals that block the radar from tracking a car equipped with such a device.
The radio waves present in any one area – TV and radio signals, garage door opener signals, and so on – can create many false alarms, but some newer radar detectors can differentiate between various kinds of electromagnetic waves to limit the number of errors.
Radar guns have been used by police for more than 50 years, and as radar detectors have improved, law enforcement agencies have added lidar guns to their arsenal. Lidar, a technology used to create 3D topographic maps, sends out a laser beam that can be directed at a single object to detect its speed within 1.9 miles per hour. In addition, a lidar beam can capture a vehicle's license plate and even an image of the driver.
Lidar creates problems for most radar detectors. While some are tuned to be able to detect laser-based speed guns, many do not provide adequate warning for a driver to slow down. To combat the power and effectiveness of lidar, a number of manufacturers have come up with technologies that can absorb the lidar laser beam and nullify its ability to detect speeders.
These anti-lidar solutions are independent of the radar detector device; they are polymers that can be applied to a car’s headlights or other parts of the front grill. In many states, such laser jammers are illegal because of safety issues with laser beams.
Finding the right radar detector for your purposes isn’t as simple as searching, clicking, and running your card. There are a number of considerations to take into account.
The advantage of a dash-installed radar detector is that it is far more difficult for a thief to steal and equally difficult for law enforcement to detect. And when it comes to radar detectors, a less-conspicuous device is optimal.
Those who change cars frequently or rent vehicles often would be better off with a portable radar detector. If the dangling power cord is an issue or annoyance, there are radar detectors that run on battery power, although battery life could then become an issue.
In the U.S., traffic radar is done over three bands of the radio spectrum: X-band, K-band, and Ka-band.
Not all radar detectors can easily detect signals from all three bands.
It is wise to check which bands a specific device covers and whether it uses a high-end, adjustable antenna to provide the ability for greater coverage.
Aside from sensitivity, one of the most important factors to consider when selecting a radar detector is the number of false alarms it sets off.
With so many radio waves in the atmosphere, lower-end radar detectors can be set off by any number of devices, including automatic door openers (the kind you would find at the entrance of a supermarket) and other radar detectors.
To avoid false alarms, higher-end radar detectors have built-in filters used to tune out frequencies common to the radio waves that generate false alarms.
WiFi and Bluetooth technology have been a big plus for the radar detector industry.
Because no radar detector can be 100% accurate, a number of higher-end units come with both WiFi and Bluetooth (your car must have WiFi in order for some of these features to work) that can communicate with other drivers for crowdsourced info on speed traps and other hazards.
This information can also come into your smartphone and then be shared with your radar detector via Bluetooth.
At the time of this writing, radar detectors were legal for passenger vehicles in 49 of the 50 states, with Virginia and the District of Columbia being the exception, and all 50 states forbid the use of radar detectors in commercial vehicles.
Also at the time of this writing, radar detectors are legal only in the Canadian provinces of Alberta, British Columbia, and Saskatchewan.
The restrictions are the same for lidar detectors.
It should be noted that in the state of Virginia, simply having a radar detector in your car – even unplugged – is against the law and could result in a fine.
Because laws can change quickly, it’s always wise to check the law detector regulations imposed by any region in which you’ll be driving.
There are a number of radar detectors in this price band that might be considered bargains, but customers uniformly complain about displays that are difficult to read, weak battery life, and a large number of false positives.
Another issue some cheaper radar detectors may have is a constant beeping that makes it difficult to determine whether or not the unit has detected a speed trap.
Moving up in price, you’ll find radar detectors with added features such as laser detection and the ability to filter out false alarms.
Many of these radar detectors will offer various modes for driving in the city, where false alarms are more common.
What you find as you climb up the price ladder are such features as the ability to detect Ka-band, which is prevalent in Europe and possibly coming to the U.S. Higher-end radar detectors may also have a shut-off feature that makes them undetectable by police in areas where the devices are illegal.
In this lofty price range, one special feature you’re likely to find is the superior ability to detect lidar from a distance. For less-expensive radar detectors, this is challenging if not impossible.
Q. Does it matter where I place my radar detector in my car?
A. The best placement for your radar is pointed slightly down and in line with the center of the vehicle.
Q. Can radar detectors pick up red-light cameras?
A. In general, only the most expensive radar detectors can pick up the radar used for such cameras. Older red-light cameras operate on a pressure pad in the highway and cannot be detected by any device.
Q. Are laser jammers legal?
A. Devices that block lidar detectors are illegal in some states. Check the specifics for any state you’ll be traveling in.