How can transit priority systems operate to manage traffic flow?

Transit priority systems play a crucial role in managing traffic flow by ensuring that public transit vehicles, such as buses and trams, can move efficiently through traffic signals. The concept of green extension and red truncation is central to this operational strategy.

Green extension refers to the ability of the signal control system to prolong the green light duration specifically for transit vehicles approaching a signal. This allows buses or trams to continue their route without significant delays, thus improving their overall punctuality and reliability. On the other hand, red truncation involves shortening the red signal phase that would typically be experienced by a transit vehicle, enabling them to get back into service quicker once the traffic conditions allow.

Implementing these strategies effectively reduces delays experienced by transit vehicles, encourages their use by the public, and generally enhances the efficiency of the transportation network, contributing to better traffic flow overall. This method maximizes the efficiency of public transportation while maintaining safety for all road users.