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BigBriWil

Joined:

Mar 09

Posts: 28

BigBriWil says:

NW Police Camera Vans used at Night.

Camera vans are out in North Wales after dark!

Have they new technology? Or is it just a scam to scare Christmas motorists? I can't see (no pun here!!) how their cameras can see through the glare of two headlights, our registration plates are visable by reflected light so if no car is coming in the other direction would it show through the headlights, I don't think so.

Anyone else seen plod in other parts of the country racking up extra overtime?

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  • Posted 3 years ago (08 December 2011 18:11)

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AdieR

Joined:

Apr 08

Posts: 3042

AdieR says:

Not sure

but the first thing that springs to mind is the usual drink-drive crackdown - at least, thats what they're doing in N. Yorks.

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jaffa90

Joined:

Mar 09

Posts: 8925

jaffa90 says:

camera

Never heard of a mobile speed camera working in the dark.As AdieR says,it`s probably d/d.  

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MakemRider

Joined:

Jul 11

Posts: 244

MakemRider says:

night time cameras

many years ago when I was fitting CCTV cameras, one bit of kit we used would invert the highlights (can't remember what it was called) & the threshold could be adjusted so car headlights, street lights etc. were greyed out thereby allowing the operator to see (and even read) reg. plates.

That was 20+ years ago in the early days of CCD cameras & technology has moved on a lot from then.

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MakemRider

Joined:

Jul 11

Posts: 244

MakemRider says:

night time cameras

many years ago when I was fitting CCTV cameras, one bit of kit we used would invert the highlights (can't remember what it was called) & the threshold could be adjusted so car headlights, street lights etc. were greyed out thereby allowing the operator to see (and even read) reg. plates.

That was 20+ years ago in the early days of CCD cameras & technology has moved on a lot from then.

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spondonste

Joined:

Aug 02

Posts: 2736

spondonste says:

night time cameras

Modern CCTV cameras can run with infa red illumination so can work equally well at night. Chances are its part of the D/D campaign or possibly also ANPR checks (road tax etc)

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BigBriWil

Joined:

Mar 09

Posts: 28

BigBriWil says:

They are 'Go Safe' Vans.

Go Safe, previously Arrive Alive, not the licence recognition vehicles just single camera-speeding ticket in the post. No parrol cars with them, they are gits aren't they??

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crustybiker

Joined:

Apr 04

Posts: 154

crustybiker says:

send them down south

please send them down here then they can catch all the taxi drivers who drive around at night they drive like bloody loonies

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MakemRider

Joined:

Jul 11

Posts: 244

MakemRider says:

CCTV

Often the use of IR made things worse as the IR would reflect back off the numberplate causing it to 'whiteout' making it unreadable. Switching off the IR and letting them work in the available light meant the plates could be read.

Problem wasn't the low light level, it was the brightness of the headlights towards the camera closing down the iris and everything bar the lights went black.

The use of a 'peak white inverter' (remembered the name tonight) turned the lights from white to a shade of grey and the iris to stay open as the scene was 'averaged out'.

As I say, there have been great improvements over the years so whether peak white inverters are still used I don't know but if it could be done then, it can be done better now.

 

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