Always best to know your enemy even if you're not going to take it on.
Speed Camera Guide
- Thread starter Liam
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Speed Camera Guide
B18 RDM said:
Hold up didn't you drive Aaron's car sure he said something bout your enthusiastic driving!!!
Motorcyclists have this great game they play in London with speed camera's. They race up to them at 50-60 in a 30 zone and then just before they reach it they slam on the brakes and go through it at 25mph. The speed camera goes off and takes it's two pictures of them driving very responsibly
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Speed cameras in restricted, built-up areas, around schools, then yes....B18 RDM said:
...but for some copper to be hiding in a bush as I boot it from 30 into Nationals i.e. wide open country roads, then no. Yes, I got my 9 points that way
[6 within 5 minutes of each other ]
darkcircuitUK said:Motorcyclists have this great game they play in London with speed camera's. They race up to them at 50-60 in a 30 zone and then just before they reach it they slam on the brakes and go through it at 25mph. The speed camera goes off and takes it's two pictures of them driving very responsibly
I don't get it!
Gatso speed camera's work using radar as you approach them. They calculate your speed coming towards them and then when you pass them know when exactly to take the pic to catch you. They don't calculate your speed once you've gone by, that would be too late. Once you pass the camera it takes your pic and then at HQ they check the speed camera was correct by measuring the distance you covered in the amount of time between flashes (hence the white lines on the road). Therefore when they rush up to the camera at 50-60 then the camera detects they are going 50-60 and will then take a pic regardless of the speed they are going on the other side. Class
I thought gatso's use the marks on the road to work out your speed and the ones that use radar are the forward facing ones which are useless against bikes anyway?
Nope, the white lines are for visual indication by the human users after the pic has been taken. On the back of those back facing camera's in a radar beam and detector.
Hmmm i'm confused as in that case should def of had my pic taken a few times like approaching one at 80mph then gettin the speed down enough (from start of marks) not to have had a fine....
Ahh well learn something new everyday!
Ahh well learn something new everyday!
They can tell when your slowing down as you approach and can calculate that you are slowing down enough to be at the speed limit as you pass. Thats why it works well if your on a motorbike, you can accelerate really fast towards it and stop a lot quicker than a car. Speed camera's aren't really set-up to deal with performance bikes
It may have taken your picture but before you reached the specified place (as I mentioned earlier it works out when is best to take the pic based on your approaching speed) and therefore it will have taken it early as you slowed down. I'm not an expert on how the camera's work, all I know is that it calculates your speed from the front of the camera and takes your pic from the back.
It may have taken your picture but before you reached the specified place (as I mentioned earlier it works out when is best to take the pic based on your approaching speed) and therefore it will have taken it early as you slowed down. I'm not an expert on how the camera's work, all I know is that it calculates your speed from the front of the camera and takes your pic from the back.
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Hmm, I am not sure they are good enough to work out deceleration and I would have thought they would take your speed as you're passing over the start of the lines not way back then take your picture since most can slow down for white lines on the floor so what would be the point, it's not like it has to take ages working out the speed then ages to consider whether to the photo.
Doppler shift is used for the speed reading which is caused by the waves reflecting off a target, as I say, whether they can work out from that you're retarding, I doubt it.
Doppler shift is used for the speed reading which is caused by the waves reflecting off a target, as I say, whether they can work out from that you're retarding, I doubt it.
They can work out if your decelerating by taking multiple readings as you approach the camera, which it does do
I agree with stuarts theory i totally disagree about speeding in built up areas! dual carriageways hmmmm ok if you know the area! and motorways well i say no comment to that!
yes i drove aarons car but his car doesnt know what slow is lol no joke it flippin flys and i was not speeding in a built up area!
x
yes i drove aarons car but his car doesnt know what slow is lol no joke it flippin flys and i was not speeding in a built up area!
x
dillinger39
Established member
i generally drive slow so i hope not to get caught out. but sometimes i go fast in vain hope to keep up with people
darkcircuitUK said:Gatso speed camera's work using radar as you approach them. They calculate your speed coming towards them and then when you pass them know when exactly to take the pic to catch you. They don't calculate your speed once you've gone by, that would be too late. Once you pass the camera it takes your pic and then at HQ they check the speed camera was correct by measuring the distance you covered in the amount of time between flashes (hence the white lines on the road). Therefore when they rush up to the camera at 50-60 then the camera detects they are going 50-60 and will then take a pic regardless of the speed they are going on the other side. Class
I'm not sure I agree with your theory. I've never read that GATSO's read speed from behind them, furthermore they don't have a rear mounted sensor.
Moreover if that was the case then they wouldn't be triggered by speeders going the opposite direction.
Even more so while your in range of a GATSO while passing it speeding up would not cause it to trigger if your theory was correct which they do.
On top of that they take pictures anywhere on the white lines which means that they constantly measure speed while a moving object is in view,. if they measured speed from the back then they would be able to calculate at what point you'd be passing the flashing zone and take pictures as soon as possible e.g from the first white line.
GATSO and most other Radar Speed detectors work on Radar, they bounce the radar off objects and measure how long it takes it to come back so the Gatso can and in theory only measure your speed once it can see you which is when you've gone passed it.
Have no Idea how these motorbikes play these camera games but I've never seen it being done down here...
I know if you are slowing down or speeding up while in range of a GATSO it will trigger it but take only ONE picture which is not valid for prosecution.
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Gatsos work, as Paul said, by the Doppler Effect, which is the change in wavelength of infra red light, and not radar, which is something else. This technique is used to calculate the speed of planets in the universe, and shows that the universe is continually expanding.
I've never seen Gatsos used in the way DarkCircuit described. They have no rear facing devices at all.
The white lines are the speed trap i.e. where the infra red light is.
I've never seen Gatsos used in the way DarkCircuit described. They have no rear facing devices at all.
The white lines are the speed trap i.e. where the infra red light is.
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So no white lines and those types of camera can't be used?
Ok so if there is a Gatso with no white lines can you still get convicted or do they legally need the lines?
