avarage speed cameras

how do they work?

if they take shots from the front, i take it that they wont get bikes?

Two cameras set a known distance apart, first logs all number plates, as does second, the system then calculates speed and flags up for a fine if needed.

They can face forward or backwards (as a pair I beleive), so if it's a forward facing one, then yes, they are pretty safe for bikes, although the usual caveat applies, if you speed through them every day, they'll make an effort to hunt you down.

[Biker Biggles]

Originally Posted by hovis

how do they work?

if they take shots from the front, i take it that they wont get bikes?

You in trouble again?

if you notice a lot of average speed cameras have normal cctv cameras placed relatively near them facing the opposite direction to get bike number plates.

Speed = distance/time

Clocks the number plate going in and out of a set distance and calculates the average speed...

# plate + DVLA records = more points on your licence if you're not careful

They have forward and backward facing camera's but not on all so best to be careful.

[Dave20046]

Originally Posted by hovis

how do they work?

if they take shots from the front, i take it that they wont get bikes?

I've always just rocked on through...

wouldnt want to put my licence on the line to find out.
I've seen the yellow cameras facing on coming traffic but usually these are coupled with another camera. I assume using date and time stamps from the footage they can ID a bike as a naughty bike and send its owner some club card points.

i was just wondering

theres a bit of the M4 thats about 10 miles long, and its a 50 mph zone, its 3 lanes and should be a 70

Originally Posted by blueto

if you notice a lot of average speed cameras have normal cctv cameras placed relatively near them facing the opposite direction to get bike number plates.

not neccesarily true,

average speed cameras work by tagging you as you enter a "zone" then tagging you again as you leave that zone, zones are rarely the distance between 2 cameras, usually they are between 2 or more cameras, so your average speed is measured over a longer distance, this is done for several reasons,
Some systems can only record the lane they are over and partial into the adjacent lane, thats why there are often multiple heads on each column, they can be fooled by drivers swapping lanes over measured zones, ie moving from lane 1 to lane 3, if the zones arent obvious ie between camara a and camera b it makes it impossible for a driver to work out the system and try and cheat and increases the likelihood that you will be caught,
The CCTV cameras are not to corobarate the specs cameras they are there to monitor traffic flow and provide quick identification in the event of an accident to get emergency services or breakdown vehicles.

dont however fall into the trap of believing that you cant be caught on a forward facing camera on a bike.

the CCTV operators can easily call the police and give them the identity of anyone blatently taking the pi55 and they just wait for you outside the roadworks, the tapes from the CCTV could then be used as evidence against you, everythings time coded.

A CCTV operator isnt qualified or even capable of issuing a ticket, but if they see you burst through every day they may just pass your info over to the police who will just follow you through.

anyway, im not saying anyone does, but dont speed through roadworks, its scares the 5hit out of lads who have to work in them.

including me.

i guess eveyone has been through average spped cameras where the normal speed is 50 when road works are going on but now im going through them with some cones at the side of the motorway and they are national speed limit is this just a ploy for the goverment to get some more money in these harsh times???