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Adenauerallee: New layout offers space for everyone
In future, Adenauerallee will offer more safety for cyclists and more space for commercial traffic. A new cycle lane and 20 loading zones will be set up for this purpose. A three-month traffic trial has shown that motor vehicle traffic can be handled in one lane at a time.
On August 29, 2024, the Bonn City Council reached a compromise on the redistribution of Adenauerallee, which is intended to better reconcile the needs of the various road users.
The background: This is why the road is to be rebuilt
Adenauerallee is being renovated between Koblenzer Tor and Bundeskanzlerplatz.
Since June 2024, the City of Bonn has been renovating both the sewer and the carriageway of Adenauerallee between Koblenzer Tor and Bundeskanzlerplatz in several sections in one go. This is because the drainage systems and the carriageway of Adenauerallee (Bundesstraße 9) are in a very poor condition. In many places, rainwater no longer flowed into the sewer but seeped into the ground. The result: subsidence in the ground, which can lead to the already dilapidated and uneven road surface collapsing - as has already happened several times in the past. The road space needs to be redistributed, as the current cycle lane does not meet current safety standards.
The new plan: greater safety for all road users
There is no longer enough space on Adenauerallee for two lanes of traffic and cyclists in each direction. Anyone who has driven there by car in recent years knows the feeling of only being able to drive very carefully and with great concentration alongside another vehicle. There was no room left to overtake cyclists with the prescribed safety distance of 1.50 meters. And anyone who was on a bike during this time knows the feeling of being very unsafe there - so narrow between the fast cars and the parked vehicles.
Bicycle traffic has increased, and most of today's motor vehicles are wider than they were a few decades ago. Current traffic planning regulations confirm the subjective feeling of road users: The traffic routing no longer meets today's traffic planning requirements. There are a lot of cyclists on Adenauerallee who are not adequately protected. This applies in particular to the northern part of the road, where there are sometimes more than 4,000 cyclists a day. For example to Beethoven-Gymnasium or the university. For this reason, a structurally secured cycle path, a protected bike lane, is to be installed on this section.
The situation for cyclists will also improve noticeably south of Weberstraße as far as Bundeskanzlerplatz: A two-meter-wide cycle lane, clearly marked in red on the sides, is planned here. As the roadway offers more space here, motor vehicle traffic will be given a particularly wide lane. This will allow significantly more flexibility, especially for commercial traffic. Specifically, the wide lane offers the following advantages:
More space for commercial traffic: all stopping positions can be approached at any time - even those places where commercial traffic is sometimes allowed to stop with a special permit.
More flexibility: Waiting, turning or defective vehicles can be overtaken. In the event of congestion, there is sometimes more space for vehicles to park. This can benefit the flow of traffic for motor vehicles on Adenauerallee.
To ensure that commercial traffic runs smoothly and parcels, for example, can be delivered, 20 new loading zones will be created in Adenauerallee and the side streets.
The Bonn City Council approved this new division of Adenauerallee at its meeting on August 29, 2024. The administration will set up the new traffic routing once the renovation is complete.
This is what Adenauerallee could look like in the future
Afterwards
Before
Select the percentage of the bottom image to be displayed
The Adenauerallee in front of the Juridicum.
Results of the dialog
From March to May, the administration tested a new traffic routing on Adenauerallee. For the first time, cyclists were able to use their own separate cycle lane, while motor vehicles used one lane instead of two. Eleven new loading zones were set up to strengthen commercial traffic.
The administration conducted an intensive dialog with the public - before, during and after the trial. Among other things, dialog stands, discussions with those affected and associations as well as online participation took place.
In this way, the dialog influenced the city's planning:
More space for motor vehicle traffic: South of Weberstrasse, motor vehicle traffic will be given extra wide lanes to improve traffic flow.
Flexibility for commercial traffic: So that commercial traffic can also reach stopping positions outside designated stopping positions, the structural separation in the south of the road will be removed.
More loading zones: Instead of the eleven loading zones originally planned, 20 loading zones will be set up on Adenauerallee and in the side streets.
New crossings and turning options: The administration is looking into creating more turning options and setting up new traffic lights for pedestrian traffic - for example at Beethoven-Gymnasium.
Pick-up and drop-off traffic: The administration is looking into solutions to improve the traffic situation at Beethoven-Gymnasium.
Looking back on the trial: what were the results?
On July 2, 2024, the administration published the results of the three-month trial between March and May 2024. The evaluation was prepared by an externally commissioned specialist office, which had compiled the findings from the trial phase. The evaluation of the travel time for the months of the previous year was prepared as a comparative figure.
The evaluation shows that the increase in travel time for motor vehicle traffic is well below the limits set by the Bonn City Council:
Specification: the average travel time averaged over the entire day from Bundeskanzlerplatz to Koblenzer Tor and in the return direction must not be more than four minutes higher than the average value in the year prior to the traffic test (measured by month). Result: The average travel time averaged over the entire day has increased by around 30 seconds in the northbound direction and 48 seconds in the southbound direction in the core week (Tue-Thu). On Saturdays, the change is around + 48 seconds (north) and + 39 seconds (south).
Specification: The peak travel time (5 p.m. to 6 p.m.) for the same route may be extended by a maximum of 8 minutes on a monthly average compared to the comparative value at the same time with two lanes. Result: In the core week (Tue-Thu), the travel time between 5 and 6 p.m. increased by around 25 seconds in the northbound direction and by around 63 seconds in the southbound direction. The maximum increase in the northbound direction was 1:53 minutes between 3:45 pm and 4 pm. The maximum increase in the southbound direction was 2:14 minutes between 8:30 am and 8:45 am. The peak hour in the afternoon shifted slightly to the earlier afternoon (4-5 p.m. instead of 5-6 p.m.).
The test thus showed that motor vehicle traffic on Adenauerallee can also be handled in a single lane. In its evaluation, the specialist office also examined possible effects of the traffic test in the immediate and distant surroundings. No shift of vehicle traffic to other roads was identified.
