On 16 July 2018 the first 8 intelligent roadside units (RSU) were installed on the A9 motorway near Alkmaar, The Netherlands. Rijkswaterstaat, the Dutch national road authority, uses the RSUs to monitor and manage the traffic on the Dutch motorways. New technologies allow for smarter traffic management. Therefore, Rijkswaterstaat develops and tests a new generation of RSU, called iRSU. This work is carried out as one of the pilots in the URSA MAJOR neo project.
A total of 5.700 RSU along the Dutch motorways are used to process loop data and to control VMSs, in order to give end of traffic jam warnings or closing lanes. However, the RSUs are reaching their end-of-life time, and together with new technologies, these ‘old’ RSUs will be replaced by intelligent RSUs (iRSUs). With the new iRSUs GPS information from the vehicles can be used as an alternative data source, making expensive detection loops redundant. And in the near future drivers will be able to receive real-time traffic information on their navigation system.
Since soft- and hardware in the iRSU are separated, Rijkswaterstaat can remotely install, update and maintain the software. Flexibility and scalability will be the big advantage of the iRSU. iRSUs will make Rijkswaterstaat’s work better, more efficient and cheaper. It will also allow to make the transition from VMSs to in-car systems
Factory Acceptance Testing of intelligent Roadside Units
Pilot on the A9
iRSU was developed by Rijkswaterstaat in 2016 and 2017. An extensive test phase showed that the system works. Therefore, now it is possible to start a pilot iRSU on the A9 between the Wijkertunnel and Alkmaar, in the north-western part of the Netherlands.
During the pilot Rijkswaterstaat will buy the first series of approximately 40 new iRSUs. During the pilot it will be assessed whether the systems do what they should do: Can they do the same as the old systems? Can the software be managed from one central place? Can FCD be used to control the VMSs?
intelligent Roadside Unit along A9 motorway
First steps from intelligent transport systems to autonomous vehicles
The pilot will provide insight in the changes to come. New technologies will make both cars and roads more intelligent, and this can contribute to a more sustainable, safe and efficient mobility. Intelligent RSUs are one of the solutions with which Rijkswaterstaat prepares the infrastructure for the mobility of tomorrow. The new insights and experiences of the iRSU pilot will deliver valuable information on how to replace the current 5.700 RSUs in the Netherlands.