MergingNew Zealand
1. Merging
Merging is the process of joining a stream of traffic from another lane or road, such as when an entry lane joins a motorway or when two traffic lanes become one. The merging driver must observe surrounding traffic, signal when required and enter an appropriate gap safely.
Drivers already in the continuing traffic lane should remain alert to merging vehicles and avoid unnecessarily preventing them from joining. Special zipper-merging rules may apply when traffic is heavily congested and a lane ends.
What does “merge like a zip” mean in New Zealand?
NZ Transport Agency recommends leaving space for vehicles from the adjoining lane to take turns joining the traffic stream. This is safe-driving guidance; do not force a merge when there is no safe gap.
🔗 nzta.govt.nz • New Zealand, NZTA official Road Code — merging
How should you merge from a motorway on-ramp in New Zealand?
Use the on-ramp to adjust to traffic speed, signal for at least three seconds, check for a safe gap and merge smoothly. A zipper merge does not justify entering directly in front of another vehicle.
🔗 nzta.govt.nz • New Zealand, NZTA official Road Code — merging

Traffic rules
New Zealand