You can legally travel up to 50 metres in a bicycle lane when preparing to turn left in Australia (for example under Queensland and similar state road rules).

Quick Scoop: What the rule actually means

  • The bicycle lane is not a normal driving lane – you’re only allowed in it for specific reasons, including:
    • To turn left at an intersection or driveway.
* To avoid an obstruction (e.g. crash, roadworks).

* To enter or leave the road (driveways, side streets).
  • In those situations, you can drive in the bicycle lane for a maximum of 50 metres before your left turn. Going beyond that distance is treated as a breach of the road rules and can attract fines and demerit points.

Think of it as: move into the bike lane only when you’re genuinely setting up for the left turn , not as a shortcut lane, and keep it under about half a football field in distance.

Why this is a thing

  • The 50‑metre limit is there to:
    • Give drivers enough room to safely merge and turn left.
* Minimise the time cars and bicycles are forced to mix in the same narrow space.
  • Safety-wise, drivers must:
    • Check mirrors and blind spots carefully before moving into the bicycle lane.
* Give way to cyclists who are already in the lane.

A quick example

You’re driving along a road with a marked bike lane on the left and an intersection coming up where you need to turn left.

  1. You indicate left.
  2. When you’re reasonably close to the intersection (within about 50 m), you check for cyclists, then move into the bike lane.
  1. You stay in that lane only as far as needed to complete the left turn, giving way to any cyclists in the lane.

If you stayed in the bike lane for, say, 150 metres just to skip traffic, that would be illegal under the 50‑metre rule. TL;DR:
For a left turn, you can legally travel up to 50 metres in the bicycle lane, and only for the purpose of making that turn or similar limited reasons like avoiding obstacles or entering/leaving the road.

Information gathered from public forums or data available on the internet and portrayed here.