Understanding Traffic Lights and Their Effectiveness on Cycleways

The coordination of traffic signals is a crucial aspect of managing traffic flow on roads. However, when it comes to cycleways, the varying speeds of bicycle riders can hinder effective traffic signal coordination. Unlike peak traffic flow, public transport, or heavy truck movements, which are often prioritized for signal coordination, bicycle riders travel at different speeds, making it challenging to optimize traffic signals.

Typically, traffic signal coordination is most effective where traffic flows are high and consistent, with vehicles traveling at known speeds, such as posted speed limits. In areas with multiple types of road users or frequent turning movements, each movement requires a dedicated phase in the cycle. If a particular movement is not detected during a cycle, the signals can skip that phase or adjust the cycle length to accommodate other phases.

In the Sydney CBD, where traffic congestion is common, bicycle and pedestrian phases are automatically introduced during peak hours to ensure smooth traffic flow. Cycle lengths are kept as short as possible to minimize delays. If you encounter faulty signal operation, please report it by calling 131 700.

When approaching a traffic signal, it's essential to stop in the middle of the lane, just behind the stop line, for optimal detection. On newer roads with inductor loops, these detectors may not be visible, so it's crucial to position your bike correctly for detection. Mixed traffic roads also feature inductor loops that detect the presence and speed of vehicles.

As you approach a cycleway, notice the three cuts in the road surface just short of the stop line. Positioning your bike over these cuts will ensure the best area for detection. The cycleways network in New South Wales uses inductive loop detectors to detect the presence and speed of vehicles. These detectors work by creating a magnetic field that is broken when a metal object, such as a bicycle or vehicle, passes over it.

When a pulse is created, the detector sends a signal to the traffic light controller, triggering a phase change. This technology allows for accurate detection and efficient traffic management on cycleways. By understanding how traffic lights work and optimizing their effectiveness, we can create safer and more efficient cycling environments.

Traffic lights