Cooperative Urban
Mobility Portal
Explore Connected and Cooperative Mobility
Cooperative
Urban Mobility Portal
Explore Connected and Cooperative Mobility
Green Light Optimal Speed Advisory (GLOSA)
GLOSA provides vehicle drivers an optimal speed advice when they approach a controlled intersection equipped with traffic lights. Based on information on the phases and timing of traffic lights, speed change advisory can be offered to vehicle drivers or vehicle controls on the approach of and departure from a signalized intersection. The service aims to create an eco-friendlier and energy-efficient driving experience for vehicle drivers by providing speed advice, traffic light information and countdown to green/red, aiming to reduce energy consumption and lower the number of stops.
Participating actors in GLOSA include vehicle drivers who wish to reduce fuel consumption and increase travel comfort, public authorities who aim to reduce CO2 emissions and increase traffic efficiency and safety, road operators who wish to increase traffic efficiency and safety, and service providers who collect and process data, in order to provide the most appropriate advice to drivers always prioritizing safety.
The objective of GLOSA is to enhance traffic flow and comfort, as well as to reduce emissions and fuel consumption.
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Business models
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.
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Architecture
ITS-G5
In case of ITS-G5 communication technologies updated information related to the traffic light phase and timing could be provided from traffic management system server to Roadside stations. Such information shall then be transmitted to approaching Vehicle stations. An On Board Unit (OBU) is used which receives optimal speed profiles from Roadside Units (RSUs). In the OBU speed advice is calculated and displayed to the driver.
Cellular
In case of cellular communications, information should be broadcasted from a server, for example a service provider server, to drivers’ personal information devices. The relevance area shall allow matching to a specific road section or specific lane, if the provided traffic light phase and timing is lane specific. A personal information device is used where speed advice is calculated, with regards to the transmitted optimal speed profiles, and displayed to the driver.
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Architecture schema
Detailed information about GLOSA architecture can be found here.
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Within the C-MobILE project the GLOSA service is implemented in seven Deployment Sites: Barcelona, Bordeaux, Copenhagen, Newcastle, North Brabant, Thessaloniki, and Vigo.
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Barcelona
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.
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Bordeaux
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Copenhagen
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Newcastle
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 .
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North Brabant
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.
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Thessaloniki
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
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Vigo
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.
This website has received funding from the European Union’s Horizon 2020 Research and Innovation Programme
under Grant Agreement number 723311.