What does a white B traffic light mean?

It is a signal only for buses, letting them go while other traffic waits.

Can I go on a B light if I am in the bus lane?

Not in a car. The B is for buses, and your red light still holds you.

Road marking · Signals for buses and trams

B light for buses

The white B light lets buses go early; cars obey their own red light.

Road Rules 2014 (NSW) rule 56Asked in general knowledgeShown in one practice question

What it means

B light for buses: what is the rule?

A normal set of traffic lights shows red, and beside it a separate black panel glows with a white letter B. That B is a special signal for buses. It lets them move off before other traffic, often to pull out of a bus lane or stop ahead of the queue. For everyone else, including you, the red light still applies, so you stay behind the line.

What to do

1
Watch your own lights, not the B panel.
2
Expect a bus beside you to move off while you are still stopped.
3
Do not follow a bus through on a B light.

A practice question with this scene

Your light is red, but a white B light is showing beside it. What should you do in a car?

Right.Not quite. The answer is A.

Special B lights let buses move ahead of other traffic, so the red light still applies to you.

Source: Road Rules 2014 (NSW) rule 56

Common questions

What does a white B traffic light mean?: It is a signal only for buses, letting them go while other traffic waits.
Can I go on a B light if I am in the bus lane?: Not in a car. The B is for buses, and your red light still holds you.

Your L plate turns green when you would pass

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