An interesting thought regarding redlight/speed cameras

[Trei]

I was driving to work today and I had an interesting thought as I passed through an intersection with those new dual speed/red light cameras (in Box Hill, Melbourne) this morning.

I understand that the sensors work by timing the car between points in the intersection using sensors on the road. My question (or thought, rather) is what happens if you're not speeding, but you wheelspin through the intersection. Would this alter the reading of the sensors in anyway?

My guess would be no, assuming you were in a 2 wheel drive car, only one lot of the wheels would be spinning anyway....but yeah, I am curious. I asked a mate from tafe and he reckons it wouldn't. What do you guys reckon?

[Bravotwozero]

Not really interesting. In fact kind of stupid.

Speed of the vehicle is measured not speed of wheels!

[Emackulation]

Red light cameras only work when the light signal is red and you pass over the loop in the road, so say your diving along and the light goes red and you havnt passed the loop/road sensor at the intersection, you gun it, as you pass the loop on the road it gives power to the camera and as you leave the loop it takes the picture, thus you get a fine. The loop/sensor just tells if there is a car on top, not how fast your wheels are moving. Unless they are uber smart these days.

This also mean if you pass the loop on a orange light the power will not have any power hence you will not get a pciture in the mail, eveer wondered why you dont get a picture when the light goes red but your still in the intersection waiting to turn? thats because you entered/passed the loop on green or orange signal light and will not power the camera. Understand?

Ofcorse this is for RED LIGHT CAMERAs, Im not sure how the Speed cameras at intersections work, maybe they have loops at both entry and exit of the intersection and calc the time between them, not sure.

[CSP]

LOL!!!

What hass wheelspin got to do with either the red light or speed part of the camera? I don't understand the OP at all.

There are sensors just on the intersection side of the solid, wide white line. If they detect a vehicle on top or passing over them after the lights has turned red, a photo is taken and a fine issued for proceeding while the light was red. There are sensors at the other side, after you cross, the intersection and the time taken to travel from the first set to the second set determines how fast you were going - i.e. if you were speeding.

[minux]

These things are bloody dangerous. Went through one on Shannon Ave down here the other night, person in the opposite direction set it off. The flash was bloody crazy. Had someone braked in front of me, I wouldn't of known. I am currently writing in a complaint to the council as when you go over this crest and it hits you its terrible.

I didnt think they were allowed to flash directly in drivers eyelines?

[Emackulation]

These things are bloody dangerous. Went through one on Shannon Ave down here the other night, person in the opposite direction set it off. The flash was bloody crazy. Had someone braked in front of me, I wouldn't of known. I am currently writing in a complaint to the council as when you go over this crest and it hits you its terrible.

I didnt think they were allowed to flash directly in drivers eyelines?

Yeah, they are pretty brutal, but I dont think they care TBH, its either flash enough to catch the plate or not get them at all.

[Bravotwozero]

These things are bloody dangerous. Went through one on Shannon Ave down here the other night, person in the opposite direction set it off. The flash was bloody crazy. Had someone braked in front of me, I wouldn't of known. I am currently writing in a complaint to the council as when you go over this crest and it hits you its terrible.

I didnt think they were allowed to flash directly in drivers eyelines?

I went through one a few months ago that flashed. Except this time the speeding driver was me!

[minux]

Yeah, they are pretty brutal, but I dont think they care TBH, its either flash enough to catch the plate or not get them at all.

So who is to blame when they cause an accident because they couldn't see the pedestrian that decided to run across in front of them?

I went through one a few months ago that flashed. Except this time the speeding driver was me!

lol that sucks

This one is a killer as it is on top of a hill and the direction it faces if it goes off and your on top of the crest it hits you straight into the eyes.

[Not_An_Abba_Fan]

So who is to blame when they cause an accident because they couldn't see the pedestrian that decided to run across in front of them?

You would already be into the intersection by the time it flashed, so if anyone was stupid enough to run out, more fool them.

[Troy711]

well, while we are on the subject

snap!



it still boggles my mind how i got done there. i know exactly where that camera is and i know i slow down and do under the speed limit every single time. either there was the 1 time my mind slipped and i was speeding... or it was camera error, but i can hardly argue the latter.

either way, its paid and long gone. and on june 21 i have 12 points again! yay!

[VH commodore]

funny how when they get u without you knowing its ALWAYS 11km/h over the speed limit which happens to be the minimum if I'm not mistaken.

[VH commodore]

also i don't understand the 'thought'/topic of this thread. like how wheelspin has anything to do with a speed camera and how a 2 wheel drive car would make a difference to a 4 wheel drive.....

[Drewie]

If the sensor for the camera is on the intersection side of the thick white line,
what happens if you stop but happen to be on or slightly over the line, does it just take a pic of an empty intersection or does the camera assume you have continued on?

[Joey_21]

what would happen if u cover up the line of sight from where it is directed do they have sensors on both sides what if one is continuely blocked by somthing and u drive through on a red light

[Joey_21]

what would happen if u cover up the line of sight from where it is directed do they have sensors on both sides what if one is continuely blocked by somthing and u drive through on a red light

[CSP]

If the sensor for the camera is on the intersection side of the thick white line,
what happens if you stop but happen to be on or slightly over the line, does it just take a pic of an empty intersection or does the camera assume you have continued on?

The camera takes a photo as the light goes red REGARDLESS (well in the ACT it does). My sister got done because she stopped hard (knowing there was a camera) and her front wheels finished just over the line. SNAP! Ticket in the mail. She's going to court to fight it too

I personally think they can cause accidents. People try to stop but can't, too quickly, rear enders etc etc...

what would happen if u cover up the line of sight from where it is directed do they have sensors on both sides what if one is continuely blocked by somthing and u drive through on a red light

What do you mean? How can a sensor be blocked? They're IN the road.

[jules]

The camera takes a photo as the light goes red REGARDLESS (well in the ACT it does). My sister got done because she stopped hard (knowing there was a camera) and her front wheels finished just over the line. SNAP! Ticket in the mail. She's going to court to fight it too

if she was just over the line i would let her off if i was the judge, but if she ended up in the intersection i'd probably fine her

What do you mean? How can a sensor be blocked? They're IN the road.

you can block the camera view, but as the shot is from overhead, you need to arrange for someone to be right up your arse

[woteva]

Here is an excellent explanation of How do fixed speed camera's work. It answers a lot of questions asked in this thread.

[Gaming Warrior]

what would happen if u cover up the line of sight from where it is directed do they have sensors on both sides what if one is continuely blocked by somthing and u drive through on a red light

How about we all rig up a James Bond set up where our number plates rollover at the press of the button >.<
Or go to plan B..... Not speed

[feistl]

So do those red light cameras work on weight or something metal going over them (Boom gates work via magnets so not sure about the red light camera).

If so, i need a strong magnet and a bicycle . Every time the light goes red, ride over the line with a strong magnet . Sounds like fun.