How do average speed cameras work in practice?

Cornucopia

keystone wrote: »

Nope. Cameras are IR. Your legal plates are reflective. Camera sees straight through the dirt.

Cheers

So.... Is it possible to have a filter (or make up a plate) that appears obscured under Infra Red, but looks okay to the human eye? And if this were possible, would it be illegal?

WTFH

Yes, it would be illegal.

redux

aliasojo wrote: »

Just idle curiosity. There's apparently going to be average speed cameras installed next summer on the main Scottish trunk route to the Highlands and I wondered how they would work in practice.

The first time I saw any of these averaging systems was in Scotland, on either the A9 from Dunblane to Perth or A90 onwards to Dundee.

It was a few years ago. Would that have been some sort of trial scheme?

westwood68

You *can* avoid the IR cameras by caking your number plate in mud.

I've seen Predator and remember that bit when Arnie manages to hide from the alien with IR eyesight when he is covered in mud so it must be true.

Just like when all those Merkins managed to liberate the Enigma machine in U-571

westwood68

Oh, & just to confirm the front/back facing issue. There are back facing average speed cameras on the 'Cat and Fiddle' road in Derbyshire/Cheshire due to the vast numbers of Power Rangers using it during the summer months

wba31

aliasojo wrote: »

Just idle curiosity. There's apparently going to be average speed cameras installed next summer on the main Scottish trunk route to the Highlands and I wondered how they would work in practice.

which roads??

I always get stuck behind a slow caravanner on the A82 up the side of Loch Lomond but once you get far enough north it opens up and is easy to pass...

adouglasmhor

Cornucopia wrote: »

So.... Is it possible to have a filter (or make up a plate) that appears obscured under Infra Red, but looks okay to the human eye? And if this were possible, would it be illegal?

Ilegal and an MOT fail since 2009.

westwood68

& with the 'obscured number plate issue'...could someone please explain that to all the women* I see after it's snowed with *everything* (including lights) obscured bar the section of the windscreen that their wipers will clear.


*I may be being sexist here but it does always seems to be middle-aged women who I spot peering through the gap in the snow.

OddballJamie

westwood68 wrote: »

& with the 'obscured number plate issue'...could someone please explain that to all the women* I see after it's snowed with *everything* (including lights) obscured bar the section of the windscreen that their wipers will clear.


*I may be being sexist here but it does always seems to be middle-aged women who I spot peering through the gap in the snow.

I saw a middle aged woman in a Volvo having a proper dressing down for doing the exact thing last winter. She had only cleared a square from the drivers side windscreen, rest of the car was under at least six inches of snow.

WTFH

OddballJamie wrote: »

I saw a middle aged woman in a Volvo having a proper dressing down for doing the exact thing last winter. She had only cleared a square from the drivers side windscreen, rest of the car was under at least six inches of snow.

Yes, that's mostly because it's dangerous for her and other road users - a slab of snow coming off the roof of the car in front of you will block your windscreen and may well cause you to crash.