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  Reply # 782124 15-Mar-2013 09:42
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sbiddle:
joker97: why are there 2 different speed limits on one stretch of road? how weird!


The stretch of motorway from The Terrace Tunnel to Johnsonville on SH1 and just past the Ngauranga Interchange on SH2 has a TMS (traffic management system) and is a variable speed zone area, meaning the official speed limit is shown on the overhead screens. This speed limit will change depending on traffic volumes, with the goal of better managing traffic flow.


If those are yellow color on overhead sihns they are not enforceable only as suggested speed.  They have them on at AKL Harbor bridge and no one follows it..




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Old3eyes


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  Reply # 782132 15-Mar-2013 09:49
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allan:
sbiddle: The traffic management system in Wellington is a total joke. Nobody follows the speeds because there are plenty of times where they're set at completely ridiculous speeds. It's not uncommon to find them posted with 60km/h all the way from The Terrace tunnel to the interchange with no merging queues either for the Gorge or the Hutt and traffic doing the standard 100 km/h because there are no reasons for the lower limit.

Because of this nobody follows the limits, which when there are merging issues would assist in traffic management if people were following the an 80 km/h limit from The Terrace tunnel.

Queueing theory is something fascinating to study, it's also very helpful understanding networks!

Is it still run out of Auckland, the centre beside the Auckland Harbour Bridge? I know the cameras were originally monitored from there, but I had a feeling that it might have changed now.


No they have a dedicated building next to one of the motorway overbridges in Johnsonville

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  Reply # 782140 15-Mar-2013 09:55
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nickb800:
allan:
sbiddle: The traffic management system in Wellington is a total joke. Nobody follows the speeds because there are plenty of times where they're set at completely ridiculous speeds. It's not uncommon to find them posted with 60km/h all the way from The Terrace tunnel to the interchange with no merging queues either for the Gorge or the Hutt and traffic doing the standard 100 km/h because there are no reasons for the lower limit.

Because of this nobody follows the limits, which when there are merging issues would assist in traffic management if people were following the an 80 km/h limit from The Terrace tunnel.

Queueing theory is something fascinating to study, it's also very helpful understanding networks!

Is it still run out of Auckland, the centre beside the Auckland Harbour Bridge? I know the cameras were originally monitored from there, but I had a feeling that it might have changed now.


No they have a dedicated building next to one of the motorway overbridges in Johnsonville


Auckland control centre can still monitor Wellington and I saw a item on ONE Breakfast that informed that Auckland still monitor Wellington after hours. 

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  Reply # 782164 15-Mar-2013 10:57
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old3eyes: If those are yellow color on overhead sihns they are not enforceable only as suggested speed.  They have them on at AKL Harbor bridge and no one follows it..


Wellington variable speed signs look like



AFAIK a red circle means compulsory

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  Reply # 782204 15-Mar-2013 11:46
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lol in akl there are suggested speed limits? now that's made my day!

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  Reply # 782211 15-Mar-2013 11:50
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wow a whole minefield again by the NZTA - well done

http://www.nzta.govt.nz/resources/roadcode/about-limits/speed-limits.html

there is a mention of compulsory if red border

there is mention you should adjust accordingly if electronic

there is no mention that certain signs are not compulsory

but i guess that is a given ... or is it!

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  Reply # 782217 15-Mar-2013 11:56
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I don't see how there can be any confusion over these - any speed limit is always enforceable.

The problem in Wellington is absolutely nobody follows these - on days when they're stuck on 60 with no congestion literally 100% of the 1000's of vehicles passing these signs ignore them.

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  Reply # 782253 15-Mar-2013 12:51
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sbiddle: I don't see how there can be any confusion over these - any speed limit is always enforceable. 



By definition yes, if its a speed limit, its the limit you're allowed to go at.
But there are speed recommendation signs all round the country - on corners. If its a 100km road, and the corner sign says 85, you won't get a ticket for going 100 around it.

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  Reply # 782281 15-Mar-2013 13:53
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BlueShift:
sbiddle: I don't see how there can be any confusion over these - any speed limit is always enforceable. 



By definition yes, if its a speed limit, its the limit you're allowed to go at.
But there are speed recommendation signs all round the country - on corners. If its a 100km road, and the corner sign says 85, you won't get a ticket for going 100 around it.

No, but those are warning signs which suggest a safe speed for the corner, as opposed to compulsory signs.

Sign types used in NZ are listed here.

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  Reply # 782282 15-Mar-2013 13:58
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So there are signs for Auckland and there are signs for the rest of nz :)

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  Reply # 782317 15-Mar-2013 14:52
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Bung:
old3eyes: If those are yellow color on overhead sihns they are not enforceable only as suggested speed.  They have them on at AKL Harbor bridge and no one follows it..


Wellington variable speed signs look like



AFAIK a red circle means compulsory


Yep your correct.




Regards,

Old3eyes


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  Reply # 782504 15-Mar-2013 21:27
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My biggest fear is if these go into private hands like the article back a few pages.
As with any new camera technology paid for by taxes, they should be publicly viewable online or not at all.

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  Reply # 782760 16-Mar-2013 19:34
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Infoconnect has an api that allows devs to get ' most' of the camera network images and the average speed of vehicles at that point. These are in turn by the various mobile and web apps that you see. However its definitely not ALL the cameras. Privatisation is a major threat to public data. Try to get bus locations in real time from the various companies that run busses on behalf of city councils! You can't and thats something everyone could benefit from

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  Reply # 782762 16-Mar-2013 19:42
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BlueShift:
sbiddle: I don't see how there can be any confusion over these - any speed limit is always enforceable. 



By definition yes, if its a speed limit, its the limit you're allowed to go at.
But there are speed recommendation signs all round the country - on corners. If its a 100km road, and the corner sign says 85, you won't get a ticket for going 100 around it.


Yes. Tourists and other visitors could suffer some confusion with corner speed 'advisory' signs. Other countries do have these but they are less common. In Australia for example rather than have several speed advisory signs over a twisty section they now tend to just put a blanket speed limit over the whole section. Dumbing down from physics to law.

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  Reply # 782818 16-Mar-2013 23:46
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so is this new fangled digital camera also smart enough to apply the different speed limits for cars and trucks ?

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