http://www.alibaba.com/product-gs/206649037/CNK6080_Radar_detector.html
Think that will pick up the stuff we use here?
Think that will pick up the stuff we use here?
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Question of the Day: What's the most interesting small town you've visited in South Africa?
Radar Detection
- Thread starter Raevinn
- Start date
Turiko
Banned
I am not sure.
What I do know is this:
1) SA speed traps use an infra-red laser beam. The spot that hits your vehicle is consequently small. This has been confirmed to me in writing by the manufacturer of the speed traps (Trapeace Korea)
2) To detect this beam, you would need a IR radiation detector. The problem is that you'd need a very large surface area to be filled with detectors, as the speed trap picks a whole myriad of spots to measure speed. In many cases the numberplate is targeted, in other cases, like my wife's car they like to target the left quadrant of the rear hatch.
3) It has been proposed that, to effectively detect the SA speed traps you would need to use a jammer, a unit that transmits a similar signal that the camera does, but the problem is they can also detect it and they jump out and pull you over, with you ending up being arrested.
4) I propose the best detection system is to determine the EM signature of these cameras and to develop a detector that can discriminate that upon the backdrop of random EM noise in nature
What I do know is this:
1) SA speed traps use an infra-red laser beam. The spot that hits your vehicle is consequently small. This has been confirmed to me in writing by the manufacturer of the speed traps (Trapeace Korea)
2) To detect this beam, you would need a IR radiation detector. The problem is that you'd need a very large surface area to be filled with detectors, as the speed trap picks a whole myriad of spots to measure speed. In many cases the numberplate is targeted, in other cases, like my wife's car they like to target the left quadrant of the rear hatch.
3) It has been proposed that, to effectively detect the SA speed traps you would need to use a jammer, a unit that transmits a similar signal that the camera does, but the problem is they can also detect it and they jump out and pull you over, with you ending up being arrested.
4) I propose the best detection system is to determine the EM signature of these cameras and to develop a detector that can discriminate that upon the backdrop of random EM noise in nature
Pitbull
Verboten
Any of you guys noticed this ?
I switched on the GPS in my Colt Bakkie and realised that if I drive 140 on the clock I'm only really driving 120
Now my question is this, the radar trap how do I know if that is correct or not. There is no way we can test them and normal users. What if I get a fine for driving 140 on my clock but on GPS it's 120. How can I prove it to the court ?
I switched on the GPS in my Colt Bakkie and realised that if I drive 140 on the clock I'm only really driving 120
Now my question is this, the radar trap how do I know if that is correct or not. There is no way we can test them and normal users. What if I get a fine for driving 140 on my clock but on GPS it's 120. How can I prove it to the court ?
Think the GPS calculates speed using a straight line type method, i.e. the distance it takes you to get between two points in a straight line. Although, that would imply it will report you going faster than you actually are. Not sure.
Also, most speedo's are off by a couple of %.
Mine is also about 10-15km/h faster than the GPS.
Also, most speedo's are off by a couple of %.
Mine is also about 10-15km/h faster than the GPS.
Pitbull
Verboten
I just don't know which one to trust now
Is there a place one can go and have it tested against these cameras ? Obviously without having to try and test it on open roads. To get to a conclusion might just cost a few rand
Pitbull
Verboten
I think you can buy a gun on ebay...
I used to have one for clocking my RC Car... they weren't that expensive. And apparently quite accurate.
oooo like the ones in the States..... now there is an idea. Thanx mate
Turiko
Banned
By law, car speedo has to over-read by a percentage, to give the motorist a bit of leeway.
The problem is when you change the rims and tires, you end up doing the speed limit and you are running very close to setting off a speedtrap
The problem is when you change the rims and tires, you end up doing the speed limit and you are running very close to setting off a speedtrap
oooo like the ones in the States..... now there is an idea. Thanx mate
I wonder if you can use it from inside the car by pointing at a stationary object outside the car
HavocXphere
Honorary Master
Pitbull, I'd be inclined to trust the GPS. The GPS's position tracking has a pretty huge artificial error/fuzziness added to it....but the error is fairly constant towards one direction so it doesn't distort speed measurements too much.
If you want to test it, watch the side road for those funny markers...they are either 100m or 200m apart...can't remember which. Only a few roads have them though. If you do a constant speed run over say 2km and you have someone with a stopwatch on board then you should get a fairly good reading.
If you want to test it, watch the side road for those funny markers...they are either 100m or 200m apart...can't remember which. Only a few roads have them though. If you do a constant speed run over say 2km and you have someone with a stopwatch on board then you should get a fairly good reading.