Green Light Optimal Speed Advisory (GLOSA)
The objective of GLOSA is to enhance traffic flow and comfort, as well as to reduce emissions and fuel consumption.
Taking into account various stakeholders’ views, a list of business model blueprints that address current or future challenges of urban areas, together with their operating and value-capture scenarios depicting the inner-workings of the business models, and the exchange of costs-benefits among stakeholders, have been created for the GLOSA service.
In Barcelona the GLOSA service is implemented based on cellular communication technology. This service covers over 20 signalised intersections of the busiest roads in the city. Applus IDIADA is the service provider which works with traffic light information from the traffic management centre of the City Council and provides it to the drivers through an App.
In Bordeaux GLOSA and SVW are implemented using both cellular 4G and ETSI-G5 communication technologies. A total of 588 intersections are configured and available to the 4G users in Bordeaux and its surroundings. Gertrude provides the timing information in real time. The 11 RSUs deployed in the city centre are also broadcasting MAP and SPaT information for intersections close to them. The service provider for GLOSA is NeoGLS and the service is available through the App “CTD – Connected Mobility”.
In Copenhagen the GLOSA service is implemented using cellular communication technology. The service provides speed advice for users so to be able to catch the green light at intersections ahead. Time-to-green and Time-to-red information is sourced in the Traffic Light Controllers and published by the local geo-messaging server in the appropriate messaging and communication standards to allow service providers and App developers to provide the information to their users. In Copenhagen, this same service is specifically tailored for optimal use by cyclists. Because cycling traffic is a more flexible mode of transport than motorized vehicles, making it easier for each cyclist to adjust their own speed and, unlike cars, less dependent on the speed of other road users in front and behind, the GLOSA service works better for cyclists especially with a lower saturation levels of the service among users.
In Newcastle the GLOSA service is implemented via both ITS-G5 and cellular communication technologies. The ITS-G5 service covers 18 signalized intersections on a key route heading north out of the city centre. This new deployment builds on an existing ITS-G5 installations covering 21 intersections in the east of the city. The new deployment is used by Arriva express buses to enable more efficient fleet operation and more reliable journey times. Siemens UK is the service provider in collaboration with Newcastle City Council and Zircon (HMI designer). Siemens UK and Zircon have also designed and implemented a 4G cellular deployment at one intersection on the same route in collaboration with NeoGLS. Newcastle City Council and Siemens are considering to expand this service through the whole route. This service is for users of the cellular bundle (currently NEAS and some private motorists) delivered to the App provided by NeoGLS .
In North Brabant the GLOSA service is implemented using both cellular and ETSI-G5 communication technologies. This service covers a several signalized intersections of the busiest roads in the city of Helmond.
In Thessaloniki the GLOSA service is implemented using cellular communication technology. The service covers a number of signalized intersections in the city centre as well as in the western entrance of the city. The Hellenic Institute of Transport (CERTH-HIT) is the service provider in cooperation with local traffic lights operators (Traffic Technique, and Swarco Hellas) for traffic lights information exchange and afterwards provision of information to drivers through the App provided by CERTH-HIT (cmobile.imet.gr).
In Vigo the GLOSA service is implemented using cellular communication technology. This service provides information related to phase and timing of 95 intersections in the city via CTAG GeoServer in such a way that drivers using the App can be informed on the current and future status of the traffic light of the headed intersection.