With GreenSpeed, the Danish company Cubris offers a driver advisory system that is of interest to both rolling stock manufacturers, infrastructure managers and railway operators.
Transport is one of the largest emitters of greenhouse gases. In terms of CO2 emissions, rail transport performs well compared to private transport. However, there is also great potential for rail to make mobility more sustainable. This is the aim of Cubris, a Danish company that has recently become part of Hitachi Rail.
Cubris aims not only to reduce the environmental impact of rail transport, but also to improve the punctuality and safety of trains, reduce operating costs for railway operators and encourage a modal shift from road and air to rail. An ambitious goal, no doubt! Cubris is supported by embedded specialist Syslogic, among others.
GreenSpeed is the name of Cubris’ connected driver advisory system (C-DAS). It acts as a link between the traffic management system of infrastructure managers and the train drivers. GreenSpeed delivers simple and intuitive driving advise based on the optimal speed profiles to the driver’s cab and enables resource-saving and smooth railway operations.
In conventional rail transport, trains are often moved between signals and travel time measurements, often traveling at the maximum permitted speed, although in most cases this is not necessary. Trains weighing several tonnes are thereby often slowed down at the next signal and have to stop. GreenSpeed prevents these unnecessary stops. Thanks to GreenSpeed’s speed profile, the driver operates the train so that it arrives at and passed the next signal at exactly the right time. This significantly reduces energy consumption and improves timetable adherence and safety on the tracks. GreenSpeed can help overcome unexpected events, for example if a train in front of the GreenSpeed train does not clear the platform as expected. The speed profile and associated advice is adjusted in near real time to avoid stopping at the station entry signal or alternatively diverted to another track with a free platform.
