My dads an retired policeman, hes also seen it used in court. heres some info stated on the net SPEEDAR This resembles a large black hairdryer, held at arm’s length by a police officer - Every police force in the land uses at least one of these - usually many more. Radar signals bounce off moving cars to tell exactly how fast the vehicle is travelling. Operators aren’t supposed to sit in their cars and use a hand-held radar device. Range is only 500m. Unsuitable for dense traffic, it does work at night.
the Prolaser3 is more widely used atm.... i think this is the one you mean as its for use between 5 & 5000m - ive been done with these myself! :S takes just 0.3 seconds to get a lock on a vehicle. http://www.tssltd.co.uk/pdf/tss_pro_laser_3.pdf
Radar guns are long gone, it's all Laser stuff now and the digital radios don't interfere, so that excuse won't work in court. I know Merseyside did away with all their Radar guns over 12 years ago, as it was all Laser when I was trained to use them. (And the lasers were starting to look a bit 2nd hand from hard use back then!)
the laserpro3 above (below depending how your view is set!) has a digi screen on the front with a xhair.... the operator is supposed to aim it at a flat surface on the vehicle (oncoming or other way) - ie the reg plate. as soon as the gun hits a flat surface it will lock and take a reading within 0.3 seconds - (that's 300ms!) and records the image and data - (distance, time & speed) .... when you get pulled you will be shown this reading on the display.... this roadside caution counts as a NIP - if he uses his judgement and considers it a fixed penalty offence, you'll get ticketed there and then and thats the end of it. at the end of his shift, the officer will upload all his nickings back at the station and there you go.... ££££££ kerching! :S they are supposed to be checked daily, which is a simple check against a vehicle with a calibrated instrument / gps, so it's not worth questioning the cal cert, as it will say in the officer's statement that it was checked before use. i got done from 230 yards with one of these, though my bike (firestorm) didn't have ANY flat surfaces from the front. i did see something on pepipoo saying their guidelines on use say up to 1000 ft, which is just under 1/4 mile - i think this is more due to the officer being expected to clearly see an oncoming vehicle 1/4 mile away, rather than the accuracy of the instrument. so tbh, if this is the case, you should well be able to see a police officer in hi vis from less than 1/4 mile away on a straight road (they wont be hiding in the twisties!) that's for a hand-held device. if it's a tripod or vehicle mounted laser camera, it could be monitoring and measuring from as far away as 5000m, which is just over 3 miles away!!! waaay before you could possible see them.... :O like the cameras on motorway bridges - they could be looking way in the distance, or right down below the bridge.
Sorry to hijack but Friday I drove past an unmarked back and front camera van on sides police and the camera sign.. I was about 36 in the 30 but clocked on that the windows at back was shut but blacked out could they still be zapping?
& just be aware guys n gals - yesterday on the m58/m57 i saw a unmarked white nissan qashqai quasimodo thing with blue lights under the grille and tail. not the type of car you usually see them in but defo was plod - saw him at the lights in the black tunic thing, reg DX13_ _ _
Looks like I've found my answer via google they still work although window shut damn! Looks like points next week
M62 from Leeds to near failsworth area ish (a long trek) was down to 50mph tonight, do them average speed ones give some leeway? Only asking as some fker has nicked the stick on Km to Mph convertor off my clocks and although I know 80km is 50mph roughly I wasn't keeping an eye on it due to wind temp being about -3 and some Irish twat in a wagon drifting all over the show. I don't usually ever speed but may have drifted past 80km for a bit
<br /><br />Is yours cable driven. I have a cable kph-mph adaptor[/quote]<br /><br />Yeah mines cable driven. Q: would the trip read in miles then if a converter is used?<br /><br />
there was a thread just the other week a SPECS camera nicked VVTR at 56 mph so there is defo not much leeway ...it used to be a 10%margin but that seems to have been waived ...well for bikes any way if you go onto some car forums and find a driver asking about going through a SPECS at 56mph he has got away with it !!! one rule for them another for us . and where THAT particular camera was on the Cat and Fiddle road , it is Bike country. http://www.calculateme.com/Speed/KilometersperHour/ToMilesperHour.htm 80 Kilometers per Hour = 49.709695378986716 Miles per Hour so you are only just in LOL