Road Administration examined best ITS equipment solutions for Tallinn Ring Road

24. september 2020 - 10:38

Warren Concrete OÜ conducted a study commissioned by the Estonian Road Administration aimed at analysing types of ITS (Intelligent Transport System) device as well as advantages and disadvantages of using different technology and coming up with recommendations for the optimal solution to implement.

The study team compared various Traffic monitoring systems by cost, functionality and application possibilities, establishing one clear winner: the radar sensor. Radar sensors offer very flexible installation options. It is also capable of identifying and counting non-motorised traffic units. The sensor detects movement in the opposite direction and accidents. The service life of such devices is at least 10 years and there are no maintenance costs.

In the near future, almost all new vehicles, irrespective of their type (car, van, lorry), will be equipped with the V2I/I2V (Vehicle-to-Infrastructure/Infrastructure-to-Vehicle) communications device system. There will be roadside terminals communicating with vehicles for relevant information transmission and exchange. The study had to find and compare the best V2I/I2V terminal operating frequency range for implementation in Estonia in view of both current and potential local and global market conditions. In the course of the study, the following two competing technologies were singled out: ETSI-G5 (IEEE802.11p/DSRC) and C-V2X. The study team recommends the cross-implementation of ETSI ITS-G5 and C-V2X in Estonia. The field tests conducted in December 2019 demonstrated that the ITS-G5 and C-V2X technology are up to 95 per cent compatible.

The section between the Jüri and Kurna junctions lacks a good alternative routing solution for road closure situations. The section offers two circumvention options: going around towards the north via the Tallinn city streets or towards the south via national roads. The study team strove to find the best solution for the existing road. This is why the recommendation is to add manual side-opening gates combined with physically operated barriers. Thus, traffic could be routed in the opposite direction whenever necessary, bypassing the road closure location.

The Traffic Management Centre of the Road Administration needs to receive real-time information from the monitoring sites on the Tallinn city boundary for the effective management of the traffic flows entering Tallinn Ring Road. The city of Tallinn already uses a traffic monitoring solution, but only for later analyses and summaries. Therefore, the system must be examined to ascertain whether it is capable of processing the data coming from the monitoring sites in real time and forwarding it to the Traffic Management Centre of the Road Administration.

It is important to develop an ITS solution architecture to ensure the flawless interoperability and integration of all current and future systems.

You can view the study here (PDF).