Same direction moving RADAR is not that complicated. It has two antennas; one measures the speed of the patrol car compared to the road, and the other measures the speed of the violator vehicle as compared to the patrol car. It adds the two numbers together and gives the speed of the violator vehicle.

 

Hmmm, that sounds correct....however, why has there not been more adoption of this type of radar, and why did it take so long after the first was released for the second to be released? If they use the same technology, it should not be much more expensive to produce.

We don't have it, but I have ridden with a good friend on the UHP who had it and it was GREAT. He was clocking cars coming up on us at tremendous speed! He would also enter the freeway and clock cars ahead of us. Drivers are much more aware of police vehicles in oncoming lanes....I wish we had it, but I also wish I had ANY kind of moving radar!

 

Let me ask you a question regarding radars. I have received a ticket for speeding, and it's not that I was oppset about the ticket because let's face it I deserved it. But my question is the ticket was marked H.H. Radar and my radar detector never went off. I tried to get some information about this H.H. Radar but nobody has any answers. My Valantine One seems to be pretty accurate but I still see officers parked on the side of the road and it looks like a speed trap, but no alarm from the detector. What is that?

Sorry about the length.

 

I got pulled over by a MA state trooper one night saw him get in his car and turn on his lights so i pulled right over, that way heh didnt get mad for having to chase me. Well he walks up does the usual license and reg. Asks me if i know the speed limit (55) he said "you were doing 70" i said i was sorry and he walked back to his car. 5 minutes later he walks back to my car and gives me a warning for 65 in a 55(warning are unheard of from staties) then he asks me if my radar detector detects lidar, i said its supposed to and he asked if it went off, i said no. He laughed and said he hoped i didnt waste too much cash on it. Nice cop though, they do have hearts afterall

 

Like other peeps have said, the laser is a very small beam, so if he aims at your plate or headlight, theres a chance it wont even reach your RD, i got yanked and mine never went off too

 

I'm going to answer the two questions posted here. The reason why there are not that many radars in use by police that detect same direction violators is simple: EXPENSE. The units are very expensive compared to "regular" radar guns. They are, again I'm going from memory here so bear with me, called "FALCON" or something like that. As I stated, it is much more difficult to monitor speeds when moving and moving in the same direction that technology for stationary radar is much cheaper and thereby w/i most dept's budget.

The reason why your radar detector did not go off when you were clocked at night is really unknown. I have read this though, LIDAR guns have limitations including cannot use in rain, cannot use w/o actually getting out of vehicle and aiming, and supposedly cannot use at night. The gun emits a very narrow LIGHT beam that is then returned back to the unit, at night it would be substantially easier for refracted/reflected light to return that was not sent from the gun; i.e. headlights/streetlights, etc. I'm not 100% sure, but I did read that somewhere like Road & Track or something like that when they tested several detectors head to head.

You guys also have to remember that just because there's a radar antenna mounted facing the rear of a squad car DOES NOT mean they clock you as you come up on them. That antenna is usually there so when that officer runs traffic duty, he can position himself STATIONARY with the car pointing in either direction but facing opposing traffic. There is a switch on the patrol car that activates either the dash mounted radar or the rear facing one at will. Again, I am not trying to condone, advocate, or justify speeding or saying anything derrogatory towards law enforcement (in case you haven't figured it out yet, I used to be in law enforcement ) but some officers and people believe that the speed readout from a rear facing antenna is accurate and true when running in the same direction and moving. As explained before, only if the car is equipped with the radar capable of same direction detection is this true.