Traffic jam chaos on the A4: New traffic lights to combat traffic disasters from July 8th!
New traffic light regulations at the Cologne-Poll junction to avoid traffic jams on the A4 will start on July 8, 2025.

Traffic jam chaos on the A4: New traffic lights to combat traffic disasters from July 8th!
The A4 in the south of Cologne is currently causing serious concern for those responsible, as the traffic jams are reaching alarming proportions. In order to counteract the traffic chaos, the traffic routing on this busy highway is now being fundamentally changed. Particularly interesting is the installation of a new traffic light on the access ramp to the Cologne-Poll junction, which will go into operation on Tuesday, July 8th t-online.de reported.
The traffic lights are intended to regulate traffic at the junction during peak times and thus avoid the usual chaos. When the traffic lights are activated, a maximum of two vehicles can enter the A4 towards Aachen per green phase. This measure, which is based on sensors in the road, is intended to prevent long lines of vehicles from forming on the driveway, which would further cause traffic to come to a standstill. In addition, signs with flashing lights will inform road users in good time.
Measures to avoid traffic jams
A high volume of traffic and the dilapidated motorway bridge at Cologne's Eifeltor contribute to the A4's susceptibility to traffic jams. The new traffic light regulation is not the only measure that is intended to help relieve traffic. Various adjustments to traffic routing, particularly in the direction of Aachen, have already been initiated following several truck accidents. Further changes in the opposite direction of travel will follow in the near future, as shown on stau-a4.de is to be read.
But the problems on the A4 are not just due to technical walls. Various construction sites and events are also putting a strain on the traffic situation in Cologne. For example, closures around Christopher Street Day and construction sites such as the Mülheim Bridge are planned until August 2025.
Intelligent traffic management
In order to fundamentally address the problem of traffic jams, the AutobahnOS project was launched. The digital networking project aims to make the highway infrastructure in Germany more intelligent and automated. Dr. Volker Wissing, Federal Minister for Digital Affairs and Transport, emphasizes that safety and comfort for road users are the central goals of the project. AutobahnOS is intended to reduce traffic jams and minimize the number of accidents, which should also benefit the people of Cologne autobahn.de reported.
A uniform IT system is coming to the traffic centers, which is intended to improve coordination and data evaluation. This intelligent traffic management could also enable supra-regional traffic control strategies to be implemented more effectively in the future. The goal is to integrate all traffic centers into this system by the end of 2026 and thus shorten travel times.
Overall, it remains to be seen whether the new measures, such as the traffic lights at the Cologne-Poll junction and the digital networking of the traffic management systems, will give the A4 in Cologne the urgently needed boost towards a more fluid traffic situation. What is clear, however, is that a good plan and a good hand are required here.