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Speed limit increases on Transmission Gully (www.rnz.co.nz)
submitted 8 months ago by Dave to c/wellington
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Transmission Gully will move to a 110km/h speed limit from next week.

"Since opening in 2022, Transmission Gully has recorded low crash rates, with no deaths despite more than 150 barrier strikes. Safety features, including two lanes in each direction and a flexible median barrier between opposing lanes help reduce the risk of death or serious injury in a crash," he said.

Bishop said during public consultation in 2025, 92 percent of the 2061 submissions supported raising the speed limit.

The 4.6km Raumati Straights section of State Highway 1 will remain at 100km/h, before the speed limit returns to 110km/h at the Kāpiti Expressway.

Bishop said while Raumati Straights was consulted on, technical assessments showed the section did not meet the minimum safety and design requirements for raising the speed limits.

I'm assuming the Raumati Straights are that really steep part with the brake failure ramp?

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[-] deadbeef79000 2 points 8 months ago

Minister, how many increased barrier strikes and deaths will it take to lower it to 100 again?

Ideally it'd stay at zero.

[-] Dave 3 points 8 months ago* (last edited 8 months ago)

Reminds me of that Calvin and Hobbs:

Calvin and Hobbs comic.Calvin: Dad, how do they know the load limit on bridges? Dad: they drive bigger and bigger trucks over the bridge until it breaks, then they weigh the last truck and rebuild the bridge. Calvin: Oh I should have guessed. Mom: Dear, if you don't know the answer, just twll him!

Do we just put the speed limit up a bit at a time until people start dying, then go back down one level?

TBH I'm not too against this change assuming the part staying at 100 is the part I think it is. I have noticed traffic in the current 110 part tends to stick to 110 or slightly above, where as traffic on the 100 bit is often moving at 110 anyway. I'd bet the average speed didn't go up by a full 10kph when they changed it.

[-] Ilovethebomb 3 points 8 months ago

https://www.stuff.co.nz/national/wellington/132425803/kpiti-road-fatalities-plummeted-since-expressways-opened

The Kapiti expressway is 110, and has made the area dramatically safer to drive in.

[-] deadbeef79000 3 points 8 months ago

That's fascinating, but not true.

The expressway itself has reduced fatalities, not the 110 limit on it.

[-] Dave 1 points 8 months ago

Haha the article is from before the road got put up to 110, for most if it's life it's been 100. But yeah travelling up the Kāpiti coast before the expressway opened was not pleasant, it's for sure a much nicer and safer road.

Personally I don't have a problem with roads like that being 110, it's clearly a much safer road than our average 100kph roads.

this post was submitted on 11 Feb 2026
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