The agency is urging motorists to check the NZTA journey planner tool to help plan ahead and avoid delays.
Waka Kotahi Auckland operations manager Rua Pani said Waka Kotahi is predicting the roads will be very busy over the 2021 Easter break as holidaymakers make the most of the chance to travel.
"Please be patient when driving this Easter so everyone can relax and enjoy their holiday."
State Highway 1 through Puhoi between 2.30pm and 5.15pm on Thursday and on Friday between 9.15am and 3.15pm are expected to be the busiest times to travel and for those heading south from Auckland through Manukau on SH1 should try and avoid 2pm and 6pm on Thursday and between 10am and 2pm on Friday.
"Congestion and delays are inevitable in peak times, but if everyone leaves plenty of time for their journey, drives to the conditions and plans ahead before leaving home, the worst of the frustrations can be eased and everyone can concentrate on arriving safely at their destination," Pani said.
"Allow plenty of time. You're on holiday, there's no need to rush."