Aerial view of a busy intersection

Navigating multi-lane intersections can be confusing. We explain what you need to know.

Road rules: the empty lane dilemma

What should you do if you need to turn into a multi-lane road from a side street? 

Imagine you’re waiting to turn left in a side street to enter a busy multi-lane road. The vehicle in front is at a Give Way line beside traffic lights. The nearest lane on the main road is empty, yet the driver does not move. Instead, they wait for a gap in the far lane because that lane leads to the motorway a few hundred metres ahead.

Within seconds, traffic begins to queue behind them.

This seemingly small decision can create unnecessary congestion. Drivers behind cannot move, the side street begins to fill up, and frustration builds – even though there was a perfectly usable lane available all along.

AA Directions Builds - 750x750 Empty lane dilemma 1
What should you do if you're the driver of the blue car and you want to access the right hand lane?

Often the issue is not impatience but confidence. Some drivers prefer to enter directly into the lane they ultimately need, rather than merge into the closest lane and change lanes later.

Changing lanes in moving traffic can be uncomfortable, particularly during busy periods. However, when there is 300–400 metres of road ahead, there’s plenty of time to reposition safely, in readiness to join the motorway after entering the road.

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Pull into the empty left hand lane first.

What the road code says

According to the New Zealand Road Code, when turning into a multi-lane road, drivers should turn into the nearest available lane, unless road markings or signs indicate otherwise.

This rule exists for a reason. Entering the closest lane keeps traffic flowing and prevents unnecessary delays for vehicles behind you. Attempting to turn directly into a far lane often requires waiting for a much larger gap in traffic, which can quickly cause queues on the side street.

By using the nearest lane first, drivers can enter the traffic stream more easily and then move across to the lane they need when it is safe to do so.

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Once you're in the left hand lane, merge into the right hand lane when it is safe to do so.

How to change lanes safely

  • Signal early so other road users can anticipate your movement.
  •  Maintain speed, do not slow down if it is not necessary.
  • Check mirrors to understand the traffic behind and beside you.
  • Check your blind spot with a quick glance over the shoulder.
  • Change lanes smoothly, maintaining a steady speed and avoiding sudden steering movements.

Sometimes, the simplest decision – using the empty lane in front of you – can keep traffic flowing and an entire street moving.

This story is from the Winter 2026 issue of AA Directions magazine.

Mandeep Shah

By Mandeep Shah
Mandeep Shah is a Training Advisor with AA Driving School.