Curious white dots painted on the road

Forums › Transport (cars, bikes and boats) › Curious white dots painted on the road - what are they?

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Geektastic

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#1128836 15-Sep-2014 10:06

kiwiharry: A bit hard to see, but as seen here on Google Street View.

http://bit.ly/1tSPDem

I saw them yesterday on my drive from Auckland to Hamilton as I passed near Drury.

Yep - those are they!

Demeter

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#1128838 15-Sep-2014 10:08

Geektastic: No these are long twin lines of dots equally spaced. At least 200 metres long I'd guess.

I've seen them being painted by contractors.

So not Aliens then? /disappointed

1eStar

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#1128839 15-Sep-2014 10:08

It's a pavement testing site. It's to work out how fast the ruts are forming, how quickly the pavement is deteriorating. It allows the road controlling authority to manage the road network by ascertaining the condition of their network and then schedule a maintenance regime.

http://www.nzta.govt.nz/resources/surface-friction-conference-2005/5/docs/measuring-pavement-condition-data.pdf

Hyper linking never works for me. Sorry

MikeB4

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#1128842 15-Sep-2014 10:08

They are NSA reference markers for aerial surveillance

Here is a crazy notion, lets give peace a chance.

Geektastic

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#1128903 15-Sep-2014 11:14

1eStar: [url]https://www.google.co.nz/url?sa=t&source=web&rct=j&ei=BQ4WVOb4EZWF8gXVzYDIDA&url=http://www.nzta.govt.nz/resources/surface-friction-conference-2005/5/docs/measuring-pavement-condition-data.pdf&cd=2&ved=0CC4QFjAB&usg=AFQjCNFYLz0HNH4gNU8K1BDTVCTWz2eYJQ&sig2=Hcl7v6O2HqfLi3ZaFx_8QA[url\]

Well done - that is the answer!!

floydie

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#1151572 10-Oct-2014 21:34

its marks for thickness testing. they have a hand held radar type thing that measures the thickness/density of the road surface. the dots are refernce marks so they can come back to them later if needed.

HP

Shop now for HP laptops and other devices (affiliate link).

mattwnz

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#1151651 11-Oct-2014 00:34

Dynamike: A temporary grid of dots painted on the road is used to measure ground movement.

They paint them on my road every summer, so last year I stopped and asked them why.

Yes they put these on some hill roads that are prone to slips.

oxnsox

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#1151666 11-Oct-2014 07:03

Says 1eStar says it's for road condition monitoring ( wear and tear caused by traffic load, speed and volume.

Often these sites appear in poor state to the road either side of them as maintenance would ruin the data. They're typically about 300m long

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