Investigations are underway to find out why a truck carrying 15 tonnes of MacDonalds fries crashed at the new Otaihanga SH1 intersection in Kapiti today at about 1.30pm.
Sergeant Mike George of Kapiti police said the northbound truck had gone around an outside lane and "for some reason rolled over".
"We're getting video footage from the Transport Agency and the truck cam, and the GPS on the truck will give us some idea of the speed.
"It's too early to say what the cause is.
"From what we can gather, he's followed a petrol tanker around the corner, and didn't seem to be doing anything different to that vehicle."
The 35-year-old male driver, from Feilding, had a seatbelt on.
"If he didn't have a seatbelt on he would have been severely injured."
Heavy one-way traffic is expected to continue until around 8pm.
Truck Loaded with MacDonalds Fries Rolls at New Otaihanga SH1 Intersection
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