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Rules of the road · about 2 min read

Divided roads, traffic lanes and shoulders

Understand the rule, its conditions and how to apply it

What you will learn

  • Explain the purpose of this rule.
  • Apply the procedure and recognise its limitations.

Purpose and essential terms

A divided road has separate roadways for opposing traffic, often separated by a median or barrier. A traffic lane is a longitudinal space for one line of vehicles. The shoulder lies beside the roadway and is not simply an extra traffic lane.

Normally use the left-hand roadway on a divided road and keep left on a two-way roadway, unless a sign or officer directs otherwise. Choose the correct entrance; a no-entry sign may face you at the wrong end of an off-ramp.

Key idea: A divided road has separate roadways for opposing traffic, often separated by a median or barrier.

How to apply the rule

For a lane change, check mirrors, the relevant blind spot, the intended lane and the space ahead. Signal and move only if the change will not obstruct or endanger traffic. Crossing a marking must also be permitted by that marking.

The reference allows a limited shoulder exception for a light vehicle being overtaken on a road with one traffic lane in each direction. It applies between sunrise and sunset, only when safe, with people and vehicles clearly visible at 150 metres. Check the shoulder for pedestrians, debris and stopped vehicles. Do not use it when any condition fails.

Key idea: Keep safely left without entering an unsafe area.

Conditions and easily confused points

The shoulder exception is about allowing another vehicle to overtake you; it is not permission for you to overtake along the shoulder. A following driver’s flashing headlights do not override the conditions. Heavy-vehicle learners must not assume a light-vehicle exception applies to them.

A road with a central division is not automatically a freeway. Freeway status is established by the appropriate sign and brings a separate set of rules.

Key idea: Apply the full rule to the actual vehicle, road and conditions.

Worked road situation

A following driver wants to pass at night and flashes their headlights.

  1. Keep safely left without entering an unsafe area.
  2. Do not apply a daytime shoulder exception at night.
  3. Maintain safe control and allow a lawful passing opportunity without accelerating.

Quick recap

  • Keep safely left without entering an unsafe area.
  • Do not apply a daytime shoulder exception at night.
  • Maintain safe control and allow a lawful passing opportunity without accelerating.

Practice questions on divided roads, traffic lanes and shoulders

1 Which roadway should you normally use on a divided public road?

  1. The right-hand roadway
  2. Whichever has less traffic
  3. The left-hand roadway
Show the answer

Answer C: The left-hand roadway

Keep to the left-hand roadway on divided roads unless a sign or officer directs otherwise. Lane changes must not obstruct or endanger traffic. Shoulder driving to allow overtaking is a limited daytime exception for light vehicles on roads with one lane each way: it must be safe and visibility at least 150 metres. Do not use the shoulder to overtake another vehicle.

Memory tip: Read the full rule, including its conditions and exceptions.

All vehicle codes

2 May you use the shoulder to overtake another vehicle?

  1. Yes, with hazard lights
  2. No
  3. Yes, whenever the roadway is busy
Show the answer

Answer B: No

Keep to the left-hand roadway on divided roads unless a sign or officer directs otherwise. Lane changes must not obstruct or endanger traffic. Shoulder driving to allow overtaking is a limited daytime exception for light vehicles on roads with one lane each way: it must be safe and visibility at least 150 metres. Do not use the shoulder to overtake another vehicle.

Memory tip: Read the full rule, including its conditions and exceptions.

All vehicle codes

3 When does the limited shoulder exception for allowing overtaking apply?

  1. At any time if someone flashes headlights
  2. At night in fog
  3. Between sunrise and sunset, when safe and visibility is at least 150 m
Show the answer

Answer C: Between sunrise and sunset, when safe and visibility is at least 150 m

Keep to the left-hand roadway on divided roads unless a sign or officer directs otherwise. Lane changes must not obstruct or endanger traffic. Shoulder driving to allow overtaking is a limited daytime exception for light vehicles on roads with one lane each way: it must be safe and visibility at least 150 metres. Do not use the shoulder to overtake another vehicle.

Memory tip: Read the full rule, including its conditions and exceptions.

All vehicle codes

4 Does pressure from a following driver make an unsafe shoulder move acceptable?

  1. Only for trucks
  2. No, safety conditions must still be met
  3. Yes
Show the answer

Answer B: No, safety conditions must still be met

Keep to the left-hand roadway on divided roads unless a sign or officer directs otherwise. Lane changes must not obstruct or endanger traffic. Shoulder driving to allow overtaking is a limited daytime exception for light vehicles on roads with one lane each way: it must be safe and visibility at least 150 metres. Do not use the shoulder to overtake another vehicle.

Memory tip: Read the full rule, including its conditions and exceptions.

All vehicle codes

Part of the guide: Freeways

More rules of the road chapters

Sources: NaTIS Rules of the Road, PDF pp. 31–32, sections 6.37–6.42; iDriving K53 manual, PDF pp. 91–102 (comparison; incomplete text extraction checked against official reference).

AceK53 is an independent study aid based on public road traffic manuals and is not an official test. Always confirm requirements with your driving licence testing centre.