Bus signals

What are B-signals?

A B-signal can be used at a signalised intersection where there is a bus lane.  The B-signal activates when it detects a bus in the bus lane and provides the bus with a head start over traffic when the green light starts.

Where a bus lane ends before the intersection and the bus shares a lane with a turning movement (typically a left turn), a left turn arrow can operate in conjunction with the B-signal to clear any traffic queued ahead of the bus.

Advantages of B-signals

• Reduces corridor time for buses.
• Increases traffic flow, in conjunction with bus lanes.
• Merges traffic streams efficiently and safely.

What are pre-signals?

Pre-signals enable buses to go to the front of the queue at traffic lights. An extra set of traffic lights with a special bus signal is installed about 50 metres before the intersection to hold other traffic back while buses go to the front.

Watch a video about pre-signals »

Advantages of pre-signals

• Reduces corridor time for buses
• Used in conjunction with bus lanes will increase traffic flow