Radar Detectors

[Ixion]

Is a corollary of that , that a cop won't laser you from behind? Only when you're heading toward him?

And the lasers don't work on Doppler, like radar, do they? So how do they handle side on?

[Swoop]

Is a corollary of that , that a cop won't laser you from behind? Only when you're heading toward him?

To get lasered from behind, this means you have ridden past him...

[Ixion]

Or he has sneaked up behind you. Which is the cop I fear, the barstool in a mufti car who drops in behind y' while you're going slow and legal through town, then follows you until you're out of the town and open it up. Is hard to spot a mufti when he's behind you, especially if it's not a Holden. One reason why if there's anyone that possibly could be one following me as I leave town I drop back and let them past. At the expense of maybe having to overtake them a bit further on

Can they not use laser from a moving vehicle? If they can only do it from a stationery vehicle ahead, then the old Mk II eyeball should work pretty well.

[Squeak the Rat]

No, laser is stationary only. Watch for overbridges, bushes etc though.

I too employ the please-overtake manouver. If your car is less than 6 years old you are a cop until proven innocent.

Mr Bel rx65 is another of my judge/jury's...

[Blackbird]

Or he has sneaked up behind you. Which is the cop I fear, the barstool in a mufti car who drops in behind y' while you're going slow and legal through town, then follows you until you're out of the town and open it up. Is hard to spot a mufti when he's behind you, especially if it's not a Holden. One reason why if there's anyone that possibly could be one following me as I leave town I drop back and let them past. At the expense of maybe having to overtake them a bit further on

Can they not use laser from a moving vehicle? If they can only do it from a stationery vehicle ahead, then the old Mk II eyeball should work pretty well.

I believe that all lasers require stationary use for aiming purposes. In the UK, they go as far as setting them up on tripods. Not sure whether this is a legal requirement. Unbeknownst to me, I had a mufti car follow me south on SH1 towards Taupo a while back, presumably intent on doing exactly what you described. I had noticed a car trailing me for some distance a few hundred metres away but didn't think any more about it as I was stricly legal for once. However, a car came the other way at a fairly brisk rate and I just about filled my pants when the mufti went to "instant on" and my detector went off. Sure enough, the car following me peeled off and gave chase. My ticker isn't built for surprises like that

[Lou Girardin]

Is a corollary of that , that a cop won't laser you from behind? Only when you're heading toward him?

And the lasers don't work on Doppler, like radar, do they? So how do they handle side on?

It's not doppler shift but similar. It measures the return speed of the laser pulses.Cosine error has little effect because of the speed of lock-on, but it can't be used at 90 degrees to the target.
And they can shoot you from behind, but few seem to do it.

[roogazza]

The cops aim at the best reflector, reg plate, headlights etc.

For that reason I run with the headlight off nowdays (together with those twin streetfighter type headlight thingys ) Why give them extra to aim at ?

In the car this morning at the top of the gorge heading to Wgton I got a very strong Laser signal and hit the picks !! never did see any boogeys ???????
The V1 is magic and although not full proof with laser , I find against radar its hard to beat. I often get 1 km warning....... Gaz.

[Filterer]

It's not doppler shift but similar. It measures the return speed of the laser pulses.

You trying to tell me that they car changes the speed of light, I think not...
I think more correctly it times the difference for succesive pulses to go from coppa to car and back and therefor the distance the car must have travelled over between pulses

[Jantar]

I think more correctly it times the difference for succesive pulses to go from coppa to car and back and therefor the distance the car must have travelled over between pulses

That is correct. And that is why a constant stream of laser light, not pulsed, can jam the Laser speed dectection unit.

[Lou Girardin]

For that reason I run with the headlight off nowdays

On the contrary grasshopper, the IR component of the headlight does slow lock-on. Especially the old tungsten bulb type.

[Lou Girardin]

You trying to tell me that they car changes the speed of light, I think not...
I think more correctly it times the difference for succesive pulses to go from coppa to car and back and therefor the distance the car must have travelled over between pulses

That's what I was trying to say in a hurry.

[scumdog]

For that reason I run with the headlight off nowdays (together with those twin streetfighter type headlight thingys ) Why give them extra to aim at ?


The V1 is magic and although not full proof with laser , I find against radar its hard to beat. I often get 1 km warning....... Gaz.

The ranges I use the laser at I can't distinguish the headlight, best to leave it on and (hopefully) be seen more easily by other road users.

And with 'instant-on' in hilly country you're more easily pinged, be warned!!

[Hellraiser]

Or he has sneaked up behind you. Which is the cop I fear, the barstool in a mufti car who drops in behind y' while you're going slow and legal through town, then follows you until you're out of the town and open it up. Is hard to spot a mufti when he's behind you, especially if it's not a Holden. One reason why if there's anyone that possibly could be one following me as I leave town I drop back and let them past. At the expense of maybe having to overtake them a bit further on

Can they not use laser from a moving vehicle? If they can only do it from a stationery vehicle ahead, then the old Mk II eyeball should work pretty well.

All ways look at the middle of the dash all mufti cars have a control unit for flashers and stuff in the center of the dash which is quite visable from your mirrors.

[Squeak the Rat]

All ways look at the middle of the dash all mufti cars have a control unit for flashers and stuff in the center of the dash which is quite visable from your mirrors.

If they are right behind you maybe. 50 meters back and I couldn't tell squat. Plus a lot of people mount detectors there which can make it look like some coppa-control gear (as can some rear window brake lights).

Listen to scumdog regarding the hills and instant on, but if you don't live in the sticks you have a little more chance of picking up some sort of signal as the coppa zaps one of the 5,432,543 cars in front of you. One of the benefits of living in Auckland I guess

[Lou Girardin]

The ranges I use the laser at I can't distinguish the headlight, best to leave it on and (hopefully) be seen more easily by other road users.

And with 'instant-on' in hilly country you're more easily pinged, be warned!!

Unless stalker man is asleep. I been zapped twice now, after I got legal.