In spite of a further increase in traffic on the motorway A 3, traffic on one of the most congested motorway sections in Germany is now to flow better. Tarek Al-Wazir, Hessian Minister of Economics, Energy, Transport and Regional Development, Steffen Bilger, Parliamentary State Secretary in the Federal Ministry of Transport and Digital Infrastructure and Gerd Riegelhuth, Vice President of Hessen Mobil, pressed the start button for an important expansion of intelligent traffic control on the motorways in Hessen on the 8th August 2018.
The new line control system on the A 3 covers a route length of over 25.5 kilometres. With this system, the traffic between Wiesbadener Kreuz and Frankfurt-Süd will be controlled intelligently. "With this state-of-the-art and intelligent traffic control system, we want to reduce congestions and accidents," said Al-Wazir.
Steffen Bilger explained that passenger and freight traffic continued to increase in the coming years. In order to be able to handle the transports accident-free and smoothly, equipment would be used to influence the route. This would make an important contribution to increasing traffic safety and improving the flow of traffic on highly congested motorways. Thus, traffic was intelligently controlled and traffic congestions could be avoided.
What are the benefits of the new system?
- harmonisation of traffic flow with high traffic density
- prevention against shockwaves
- release of the hard shoulder running as required
- congestion warning
- securing of roadworks
- warning of dangerous situations such as accidents
- warning of special weather conditions (e.g. fog)
- dynamic HGV overtaking ban
- variable speed limits
- securing of exit and access sections at junctions
This section of the motorway A 3 is part of one of the most important transport hubs in Germany and one of the main traffic arteries in the Rhine-Main region. The section A 3 between Wiesbadener Kreuz and Frankfurt-Süd includes the junction Frankfurter Kreuz, which is one of the most congested traffic junctions in Europe and connects the Frankfurt airport directly. In addition to supra-regional traffic flows, the section is therefore characterised by high heavy goods vehicle traffic, high commuter flows and airport traffic.
In future, the line control system will harmonise traffic in this section during high traffic density and thus reduce the potential of congestion. Dangerous situations will be prevented by dynamic warnings and adaptive speed reduction. In addition, the system serves to protect roadworks and traffic obstacles as well as to warn of adverse weather conditions. For the first time in Germany, a gantry of this system will be equipped with an innovative multifunctional display. As an alternative to variable message signs of a line control system, traffic information and alternative routing recommendations can also be displayed here.
Multifunctional Display at the junction Kelsterbach
In the loaded area between the Mönchhof Dreieck and Kelsterbach, the hard shoulder has already been released temporarily during high traffic volumes for several years. This increases the capacity of the route and reduces the risk of shockwaves that may lead to accident risks. As of today, the temporary hard shoulder running will be fully integrated into the new line control system.
Hessen Mobil completed the project, with total costs of around EUR 11.5 million, within two years. Under the project plan of road transport telematics, the Federal Government financed the systems with co-financing from the Connecting Europe Facility of the EU.
On Hessian motorways, line control systems improve the traffic flow on 300 kilometres. They ensure safety and optimum utilisation of existing motorway sections. Like all traffic control systems in Hessen, the Traffic Control Center Hessen in Frankfurt also controls the new system. Here, operators ensure the proper functioning of the system 24 hours a day, 7 days a week.