I currently have an LI dual (front) on my car which works fantastic. But Maryland and especially Montgomery County is going gaga with Laser based speed cameras. Some are set up permanently on medians (in pairs) shooting cars from the rear in multiple lanes. These are usually found near schools or bad parts of the road where speeding adds to probability of causing an accident. The mobile units are moved around like musical chairs to keep people guessing. The mobile units look like medium sized refrigerators and are usually chained to a nearby telephone pole. Sometimes there are two spaced maybe 100 feet apart on the same side of the road giving them a double chance if catching someone.
There's also a new setup. These look like tall poles (usually on intersections) with the hardware mounted up high (12 feet or more). I never get any warning from them so I have to be on my toes and watch my speed. But I would love to know what their technology is. Does anyone here know anything about them?
I'm also thinking of getting a second set of sensors for the rear but I'm not sure how effective they would be. I have a 350Z and there's really no place to mount them except at the top of the license plate without modifying the car body (cutting holes) which I do not want to do. So my question here is how effective are these sensors for rear protection with the laser based cameras I described in the first paragraph above? Any special needs? It would be great if they worked without having to point them outward at sharp angles so I could still enjoy protection from rear shots at a distance on interstates and such. To be honest, I have never been shot with a hand-held gun from the rear as far as I know. I have a Valentine 1 and that thing is wonderful at alerting me to laser cameras so I usually have no trouble with these traps but every once in a while I get pegged from the rear if I don't get the warning in advance from the laser bouncing off cars in front of me or catching the laser from the trap facing me on the opposite side of the road.