Motorists are being asked to drive carefully through road work sites and stick to temporary speed limits.

"Unreliable travel times are frustrating for everyone, and this is a particularly busy time with an increased level of activity on roads during the warmer, drier months of the year when we complete the bulk of this critical work – as well as our longer term projects," says a statement from the Waka Kotahi NZ Transport Agency.

"People will have noticed the mornings are cooler in recent days, meaning autumn is around the corner, so we need to make the most of the current conditions.

"While these projects are in construction, the cumulative effect of multiple programmes of work is being monitored at a regional network level and, at times, this is challenging to get right.

"Wherever possible, our crews work at night and coordinate or combine works to minimise disruption, however, the capacity of the network is stretched."

View the active worksites map here.

The roading agency says "well maintained roads are an important part of keeping people safe".

"Waka Kotahi aim to do this work with as little disruption as possible, although roadworks can be inconvenient.

"Please drive carefully through work sites and stick to the temporary speed limits."

Click here to view the intended programme for 26 February to 2 March.

The programme is weather dependent, so may be postponed to the next suitable day/night.

Check Journey Planner before you travel.