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Speed camera leeway in Canberra?

By jeckle 15 August 2010 40

Hi All,

I’m quite new to Canberra and am constantly coming across the much debated issued of the amount of roadworks and speed changes in and around Canberra. Driving around I seem to spend most of my time checking the speedo and looking for the latest sign.

While I’m slowly adjusting and learning my way around, I’m wondering what the speed camera leeway is in the ACT? I’ve been searching everywhere for this information or just an indication, but nothing as yet.

Any suggestions welcome.

Cheers


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Speed camera leeway in Canberra?
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pete74au 10:10 am 20 Aug 10

Why would you want any leeway, you can contribute as well as the rest of us to the revenue of the ACT, bugger all road safety but great for revenue.

Actually the cameras are quite generous but keep within the 5kph of the posted limits to be on the safe side.

Thoroughly Smashed 12:28 pm 19 Aug 10

DavidL5N96 said :

Note that apart from your speedo the diameter of your tyres has an effect as the tread wears down – you are going faster with a smaller diameter – I will leave it to the experts to work out if this is important.

I don’t know how I missed this corker the first time. As the tread wears down the diameter of the tyre decreases, so you’re covering less distance for each rotation of the wheel.

You also don’t have to be an expert to do some simple maths. Let’s assume a particular set of tyres can withstand 7mm of tread wear before hitting the wear indicators, as my last set of tyres did. Over the life of those particular tyres that meant a reduction in road speed compared to indicated speed of 2.3%.

Vehicle weight and tyre pressure will of course have an effect too, but that’s something I haven’t done back-of-envelope calculations on for a while.

indigoid 11:13 am 19 Aug 10

Spideydog said :

Agreed, speeding and having piss poor observation skills is twice as bad …… if you cant see a speed sign, what else aren’t you seeing 🙂

I should add that Canberra is way, way better off WRT signage than Tassie. I rode 2000km+ last week exploring that state and was continually confounded by

– signs when exiting a town saying “end 80” with no subsequent “100” or “110” sign. One presumes that the state limit (100, I think) then applies, but there aren’t many signs around stating what that actually is

– my GPS speed limit instructions frequently being at odds with current signage, including sometimes being higher than the posted limit. GPS model = Garmin Nuvi. Moral: don’t trust it. GPS was purchased two weeks ago and has current-release map data on it – City Navigator 2011

Spideydog 9:22 am 19 Aug 10

buzz819 said :

If there is a speed change, then you’ve just driven past a speed sign, seems pretty straight forward to me, if you didn’t notice the sign, you shouldn’t be driving, end of story.

Agreed, speeding and having piss poor observation skills is twice as bad …… if you cant see a speed sign, what else aren’t you seeing 🙂

buzz819 7:59 am 19 Aug 10

jeckle said :

Special G said :

Why is it people always seem to want to know – How much can I speed before I get booked? How about try not speeding for a change.

It’s not a case of wanting to know so that people can speed and not get booked, but more more of a case of learning new roads and limits in a place that seems to have a lot of roadwork going on and multiple speed changes on every major road.

Umm I think it is wanting to know how fast someone can speed with out getting booked… It has nothing to do with road works and speed limits on roads, because there is enough signs around Canberra to understand how fast you are supposed to go.

If there is a speed change, then you’ve just driven past a speed sign, seems pretty straight forward to me, if you didn’t notice the sign, you shouldn’t be driving, end of story.

indigoid 11:13 pm 18 Aug 10

The new NSW mobile cameras have 4km/h tolerance. Don’t know if this applies to other enforcement mechanisms in NSW but it is the case for the mobile cameras. This /is/ relevant to RA because they may used everywhere in NSW, not just in Sydney. I saw one on (I think) the Barton Hwy a week ago

And FWIW I’ve been let off with a verbal warning by an AFP officer when idling down Commonwealth Avenue with my bike’s cruise control inadvertently set on 90 instead of 80. It can happen. I’ve also had officers downgrade speeding tickets, including from +39 to +10 once on the Hume Hwy. That last incident was unfortunate… I’d spent the prior hours of the trip cruising happily at -10 and decided to blast down a big hill to relieve the tedium. I still thoroughly deserved the ticket, though. Maybe that’s why the plods are (relatively) nice to me… I don’t bother to feed them the same old BS that I’m sure they hear every day

I would like to see permanent speed cameras installed in every school zone, pointing both directions.

jeckle 9:30 pm 18 Aug 10

Special G said :

Why is it people always seem to want to know – How much can I speed before I get booked? How about try not speeding for a change.

It’s not a case of wanting to know so that people can speed and not get booked, but more more of a case of learning new roads and limits in a place that seems to have a lot of roadwork going on and multiple speed changes on every major road.

NeedHelp 6:54 am 18 Aug 10

There may be differences on these tolerance levels depending on how you are booked. We have three radar choices that I’m aware of.

(1) stand-alone stationary camera, (2) police radar (3) van with dude.

Tolerance level for (1) is 10%, but not sure about the other two.

I was booked by a stand-alone camera. Upon questioning them, the tolerance levels were inadvertently revealed to me by someone who shouldn’t have. I called them ‘after’ the fact, not before.

Moral of story: you will still reach your destination if you don’t speed.

PS dvaey – it’s 10% not 10kph. 10kph over the limit in a 60 will definitely get you a ticket.

southernyassfella 5:34 pm 17 Aug 10

dvaey said :

Sure your uncle was in Dubbo? Ive heard that exact story, from 3 different sources, with 3 different locations. Many sources quote it as happening in Tullamarine, Vic. There was also a newspaper in the Northern Territory that claimed it was an NT officer who was given the fine by ‘work cover’.

Yep pretty sure, well technically hes from Brocklehurst, and this happened on the newell highway, but he works from Dubbo, so I think it counts yeah.

dvaey 2:31 am 17 Aug 10

Special G said :

Why is it people always seem to want to know – How much can I speed before I get booked? How about try not speeding for a change.

If I know the police have a tolerance of 1km/hr, I’ll be looking at my speedo a lot more than if I know the tolerance is 10km/hr. With an analog speedo it can be easy to slightly exceed the speed limit by a few km/hr while barely seeing a difference on the dash.

southernyassfella said :

Dunno about ACT, but in Dubbo just over 5 years ago the police pulled over an uncle who was speeding to some sort of accident cause he worked for work cover…

Sure your uncle was in Dubbo? Ive heard that exact story, from 3 different sources, with 3 different locations. Many sources quote it as happening in Tullamarine, Vic. There was also a newspaper in the Northern Territory that claimed it was an NT officer who was given the fine by ‘work cover’.

southernyassfella 7:58 pm 16 Aug 10

Rangi said :

Slightly off topic here, but does anyone know what the rules/laws, in regard to hi-vis clothing, are for police working on roads, i.e when pulling someone over?

Dunno about ACT, but in Dubbo just over 5 years ago the police pulled over an uncle who was speeding to some sort of accident cause he worked for work cover, and after trying to explain himself, he got a speeding ticket. So in response, he got out of his car and fined the copper for a range of breaches including not wearing the high vis, too even not pulling over far enough from the side of the road. Doubt you’d ever see that in the ACT though.

NeedHelp 4:19 pm 16 Aug 10

troll-sniffer said :

“But yer honour I was doing 87km/hr in the 80 zone because I had rung up and checked how fast I could get away with”.

I think you’ll find the tolerance levels are not able to be changed willy nilly. They do set these tolerance levels to allow for inaccuracies of the speedometers in people’s cars, and also for potential inaccuracies in their equipment, although I believe they do perform regular calibrations on their equipment.

If you think their camera is screwed, and you were most definitely not speeding, ask for a calibration certificate. Then get one for your vehicle too, and see them in court if things don’t add up.

Like I said, it was my first in about 15 years, and I was having a frantic day, and the road seemed like an eternity. No excuses though.

bobbatty 3:51 pm 16 Aug 10

DavidL5N96 said :

Note that apart from your speedo the diameter of your tyres has an effect as the tread wears down – you are going faster with a smaller diameter – I will leave it to the experts to work out if this is important.

Yes, and as I’m an expert I should also add that this effect can be negated if you drive over too many ants as they tend to stick and cause much bigger diameter tyres.

astrojax 3:43 pm 16 Aug 10

Special G said :

Why is it people always seem to want to know – How much can I speed before I get booked? How about try not speeding for a change.

bingo! i get frustrated at this sort of comment [#6], given that the speed ‘limit’ is exactly that, an upper limit, not a prescription for exactly the speed at which drivers are supposed to travel: I get frustrated when people go at a speed 5-10 kmh less than allowed. why? those [like moi] who travel a few kays under the posted limit are probably exercising due caution and diligence. i recommend it to all drivers…

troll-sniffer 11:32 am 16 Aug 10

Might be the end of the story for you NeedHelp but it ain’t for the rest of us. They could change it overnight to a finer tolerance and as long as they can satisfy a learned member of the judiciary that they are not at risk of booking motorists doing the speed limit there are no comebacks. Imagine the scenario:

“But yer honour I was doing 87km/hr in the 80 zone because I had rung up and checked how fast I could get away with”.

NeedHelp 10:43 am 16 Aug 10

Thoroughly Smashed said :

NeedHelp said :

The 10% is correct, but for obvious reasons, it’s not advertised. I went out of my way to find out when I was clocked at 88kph in an 80. The tolerance level was 87. Missed it by THAT much.

First and last ticket in about 15 years.

Being fined for 88 in an 80 zone doesn’t actually prove the threshold is 87.

I asked them about tolerance levels. They told me, that in my case, had I been clocked at 87, I would been spared a ticket. I have it in writing. End of story.

Rangi 9:10 am 16 Aug 10

Slightly off topic here, but does anyone know what the rules/laws, in regard to hi-vis clothing, are for police working on roads, i.e when pulling someone over? In my industry any of our people working any where close to the road, carpark etc have to wear it, but i have recently seen 2 seperate people (no not me) pulled over with the police officer standing/working on the road in plain uniform.

And don’t even get me started on windsreen washers running in and out of traffic in dark clothing

georgesgenitals 8:26 am 16 Aug 10

If you make sure your speedo is reading no higher than the speed limit and you won’t have a problem. It a speed camera FFS – cruising 5-10km/h over in good conditions and taking a chance on the cops being around is one thing, but driving through a speed camera with your speedo reading over the limit is pretty stupid.

trevar 8:16 am 16 Aug 10

I usually set my cruise as close to the speed limit as I can (at least according to my speedo!), and I’ve never been booked driving past 100km/h speed cameras at 100km/h. Since there’s probably some error in my speedo and inaccuracy in my cruise control, there’s probably some margin for error from the camera as well.

The only ticket I’ve had from applying this principle was for doing 101km/h in an 80 zone that I thought was a 100 zone (the moral is that there’s less margin for human error!).

Welcome to Canberra, Jeckle!

Leinna 7:17 am 16 Aug 10

Victoria has +3 km/h, or they did when I last lived there. There was a big fuss about it when it came in, because it had previously been +10%. So it went from 121 km/h in a 110 km/h zone to 113 km/h.

I have been led to believe that the 10% leeway was to account for errors in speedo reading and the police radar detection thingy.

I just try not to speed 🙂

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