Whakatāne's mayor is fighting for a nationwide review of traffic management rules after the deaths of three Rotorua roadworkers at Matatā.

Higgins staff Haki Hiha, David Eparaima and Dudley Soul Raroa died when a truck veered off State Highway 2 at 90km/h on February 26.

It shunted a Higgins truck that rolled into a culvert on to the men.

David Michael Cox, from Tauranga, pleaded guilty to three counts of careless driving causing death in April and will be sentenced later this month.

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A 25-year-old Fulton Hogan worker was also killed in an unrelated crash in Wellington's Ngauranga Gorge in

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Traffic management remit aims