No More Delays on Glasgow’s Buses
Why the need for BIAS?
To improve reliability of public transport in and around Glasgow City Centre, we partnered with Glasgow City Council to deploy traffic signals that give priority to public transport.
As part of a Bus Priority Scheme, we launched the Bus Information and Signalling System (BIAS) to provide users with better information on bus scheduling and predicted arrival times, with the aim of reducing congestion levels in the city centre.
How does BIAS work?
The BIAS system prioritises public transport to make bus services more reliable, while GPS tracking provides users with up-to-the-minute information on arrival times at bus stops along the routes. The data collected is used to analyse journey times, identify any bottlenecks, and further optimise schedules to improve user experiences and cut down on emissions.
Hosted in our data centre, BIAS runs on a secure, cloud-based network which enables operators to better and remotely monitor routes, ensuring its responsiveness to changing, real-time traffic conditions. With this valuable data being turned into real-time information for users, this not only improves journey times, but also comfort and reliability of public transport.
With improved timetable efficiency and less stop-start routes for buses, congestion is greatly improved contributing towards lower emissions creating a greener environment for all.
Adaptive Control Technologies
BIAS utilises our Urban Traffic Control (UTC) system and relies on an adaptive algorithm known as Split Cycle and Offset Optimisation Technique (SCOOT). The system identifies and prioritises public transport vehicles as they progress through traffic signals on the CitA hosted solution for WYCAy’s bus corridors. It connects with radio-controlled, adaptive traffic lights to improve traffic flow and give buses priority at junctions in real time.
In order to ensure maximum interoperability, Chameleon Outstations Transmission Units (OTUs) were added to each controller site, connecting Traffic Light Controllers (TLCs) to the UTC system allowing Glasgow City Council to benefit from adaptive control without the need to connect to a central system.
Furthermore, the UTC system can automatically upload timetables and plans to Chameleon. When communications to the UTC system are not available, it can temporarily revert back to whatever local mode of control was timetabled, improving system reliability.
Where is being deployed?
Currently this system covers over 650 sites all over Glasgow.