No they are not allowed in all 50 states. They are illegal to use outright in Virginia and the District of Columbia. In New York state they are illegal to use on commercial vehicles or large trucks.
Radar detectors are legal to use for all non-commercial vehicles in 49 states. Washington, DC and Virginia are the only two states that radar detectors are banned in the United States. Radar detectors used in commercial vehicles are illegal.
Radar detectors are legal in the USA except in Virginia, Washington DC and on all military bases. Radar Jammers are illegal in Nebraska, Minnesota, Utah, California, Oklahoma, Virginia, Colorado, Illinois and Washington DC.
Yes, radar detectors are legal in Indiana for passenger vehicles. However, they are prohibited for use in commercial vehicles. It's important to note that radar detectors are legal for passenger vehicles, but using them to evade law enforcement is illegal.
The Cobra radar detector is legal in all states of the USA, with the exception of Utah, Oklahoma, California, Nebraska and Colorado. Other states which do not prohibit radar detectors may have laws which restrict the attachment of objects to wing mirrors.
According to Michigan.gov Radar Jammers have been ruled illegal in all fifty states by the Federal government. In Michigan the state sites says that it's legal to use radar detectors in private vehicles. I take that to mean it might not be legal to use one in a commercial vehicle like a 18 wheeler.
Minnesota Radar and Laser Jammer laws Radar laser detectors are legal to own and operate in passenger vehicles in the state of Minnesota. Currently the only state that it is illegal to operate a radar detector is Virginia and Washington D.C. Laser jammers are illegal to operate in the states of: Nebraska, Minnesota, Utah, California, Oklahoma, Virginia, Colorado and Washington DC. Radar jammers are illegal to own and/or operate in all 50 states per the Federal Communications Commission. Radar detectors are also illegal in commercial vehicles weighing over 10,000 pounds in all fifty states, per Title 49 Transportation Act. Radar detectors are also illegal to operate on any military base.
Radar jammers are illegal in all 50 states.
According to the speedcountermeasures.com blog, they're legal in all states except Virgina, and Washington DC, military bases, or in any commercial automobile over 10,000lbs under federal law in all states.
Escort radar detectors are sold internationally. They are available in all states in the USA and are also available in Canada. There are a range of distributors who also cover most of Europe, as well as southern Asia and Oceania.
Radar jammers are illegal to own and/or operate in all 50 states per the Federal Communications Commission.
If you are looking to jam the police frequency, you are out of luck in the US. It is illegal to use a radar jammer in all 50 states.
You can detect most types of radar itself,but you need other detectors for other systems.