Appropriate Speed Camera Alert Distances

caniwi · Occasional Visitor Joined: Apr 20, 2006 Posts: 2

Hi all, could anyone please give me advice for setting appropriate speed camera alert distances? In particular, the difference between fixed and mobile cameras. What is the range of these different camera types? I need to know how far each separate type can "see" to set my alerts correctly.

Any help/advice very much appreciated.

Thanks

PaulB2005 · Posted: Thu Apr 20, 2006 12:48 pm Post subject:

I set mine so i get amble warning to check my speed and adjust according to the camera type. Fixed 30 seconds and Mobile 60 seconds (they can be pointed at you from a LONG range).

Knowing the cameras effective capture area and using it to set the alert distance isn't really appropriate as the Fixed sites have a very short capture area but you don't really want the warning at the last minute. Decide how long YOU need to adjust your driving before you get to the camera and use that as a guide. Don't forget Mobile can face forward and capture over long distances.

missing_user · Joined: Aug 30, 2008 Posts: -7

I set the warning for 'mobile' units at 1200metres [the M4 mobile cameras are reputed to catch you at 1000metres] and 'statics/gatso' units at 600metres.

Andy_P · Posted: Fri Apr 21, 2006 5:54 pm Post subject:

I have statics ranging from 250yds @30 to 450 yds @70

Border_Collie · Posted: Fri Apr 21, 2006 6:16 pm Post subject:

Some time back MikeAlder jogged my brain into coming up with the following.

Mph - 30s - 20s - 15s - 10secs warning.

80 - 1173- 782 - 587 - 391 yards
70 - 1026- 684 - 513 - 342
60 - 879 - 586 - 440 - 293
50 - 732 - 488 - 366 - 244
40 - 588 - 392 - 294 - 196
30 - 441 - 294 - 221 - 147
20 - 294 - 196 - 147 - 98

I've added a buffer e.g the 30 second warning at 70mph shown as 1026 yards, is actually the distance required for a 30 second warning at 80mph, the 60mph at 879 yards is actually for70mph etc.
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caniwi · Occasional Visitor Joined: Apr 20, 2006 Posts: 2

Thanks very much guys. Very helpful and appreciated.

lupos0_1 · Posted: Sun Apr 23, 2006 6:34 pm Post subject:

I still believe that this should be made into a sticky.

The times on here are very helpful
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Border_Collie · Posted: Mon Apr 24, 2006 1:52 am Post subject:

I've just re-read my post and there may be a misunderstanding. I wrote..

lupos0_1 · Posted: Mon Apr 24, 2006 2:31 pm Post subject:

Not that you condone speeding of course Laughing

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Border_Collie · Posted: Mon Apr 24, 2006 4:43 pm Post subject:

DaveCole · Occasional Visitor Joined: Feb 27, 2006 Posts: 1

I think paranoia rules to a point - the attached link shows you the ACPO guidelines for laser speed detection devices and other systems. Laser is by far the most common detection system in use by mobile safety vans - the maximum range they are permitted to operate at is 2000ft, although they may be capable of reaching much greater range.

As for fixed sites, they are limited to very short ranges dictated by the position of marks on the road or position of sensor loops. SPECS works on an average speed between several cameras linked in a system.

Read the policy here http://www.acpo.police.uk/asp/policies/Data/RPET%20Manual%20version%202-3.pdf

What your GPS/alarm system won't tell you is where a police patrol has set up a random check! With target aquisition of around 0.3 seconds, your alarm will often only tell you you've just been caught! Drive safely within the speed limit and none of the above applies.

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