Yes, this is a new centreline marking which is being trialled at a number of locations around NZ. It is a low-cost way of preventing inadvertent centreline crossings by providing additional separation (1m) between opposing lanes. This treatment is used overseas where it appears to have been very successful at reducing crash severity, and particularly reducing head on crashes (20% crash reductions have been cited). It is being trialled on moderate-volume state highways and high volume state highways (presumably where road width is insufficient for other treatments).
You’ll find some more information on page 5 of the NZTA newsletter here:
http://www.nzta.govt.nz/resources/pa...thways-010.pdf and this press release:
http://www.nzta.govt.nz/about/media/...1036/news.html
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