Forbidden: Stay under the posted limit.
Target: Maintain posted speed (+ or -10%)
Minimum: Maintain speed greater than the posted speed.
Unusually, the poll looks like it's being treated truthfully, the norm is to ...
A) Vote for option most absurd rendering the poll useless.
B) Vote for all options rendering the poll useless.
Was done in 2011 but failed..http://www.kiwibiker.co.nz/forums/po...do=showresults
My perception is the sign is not a limit but a percentage.
For those interested: Guidelines for setting speed limits and procedures for calculating speed limits
It's fairly simple math really. Zoom down to "The decision-making process – calculating the speed limit", you'll see there's a bunch of data you need, but basically they answer these questions:
- How populated is the stretch of road, are there any schools?
- How many pedestrians are there?
- How many cyclists are there?
- How many car parks are there?
- How many lanes are there?
- How is the traffic controlled? (stop signs, lights, etc)
- Who uses the road?
Each answer gives a number of points, add the points up and Table SLNZ12 shows you what the speed limit ought to be. Obviously this is a guideline, subjective assessment, peer review, and a tonne of meetings would be required, but it's quite interesting.
So to answer OP's question, my personal perception of the sign is that given the above set of questions, that number is what came out the other end.
Well that explains why plenty of the corner speed advisory signs are off...the budget has been spent setting other limits. Never ceases to amaze me when a corner with a 55 km/h advisory is significantly reworked, making it a 75 km/h corner yet at the completion of the works the 55 km/h sign gets replanted...gives the tourist drivers an excuse I suppose![]()
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