Be-Mobile, tested the improved GLOSA (Green Light Optimized Speed Advisory). Various road tests took place in road sections in Breda and Helmond. The improved system ensures GLOSA is useful and reliable in relation to adaptive smart traffic control applications. Road authorities can now deploy this on road sections where they wish to improve traffic flow and wish to increase safety.
The assessment of the road tests that was completed just before the summer has led to four improvements for the smart traffic control application – red and green times based on a reservation, speed recommendation based on a reservation, the traffic control application supplies information about the queue, the recommendation applies to the entire road section between two traffic lights.
These improvements mean that GLOSA’s usefulness will be better, including for adaptive traffic lights. GLOSA, for example, supplied a reliable speed recommendation in no less than 90% of the test vehicles.
It is now up to the road authorities to decide on which road sections the improved GLOSA can be used. This can be on a local level and does not need to be everywhere in one go. Next, ‘GLOSA-enabled corridors’ can be created. These are road sections that have been carefully selected by the road authority on which GLOSA data can be used for driving task support and traffic management. These are road sections where the road authority believes that traffic in the main direction receiving useful GLOSA data is important. The smart traffic control applications must then comprise the improvements.
A GLOSA that works correctly helps in ensuring there is less braking and accelerating. The TNO study has shown that GLOSA reduces the NOx emissions of trucks that unnecessarily accelerate by up to 75%, and CO2 emissions are reduced by up to 20%. In addition, GLOSA increases the comfort of the driver who experiences a type of ‘green wave’. It is expected that this comfort will help invite traffic to use preferred routes.
Image source: SWARCO