Silent City


For questions, contact:
Kirstine Lorenzen


Global urbanization is a reality. As more and more people move to the cities, the number of people affected by noise from traffic increases. Yet it is a problem that is not a priority when planning new roads and railway lines. Because of how much it costs.

A number of municipalities in the Køge Bay area are leading the way in the fight against noise and, together with Gate 21, have started the project Silent City which will focus on traffic noise, showing the possibilities and results of combating the noise.

On the map below you can see the noise projects that our project partners and external partners outside the project have initiated to reduce the noise in the Køge Bugt area.

Silent City Secretariat

Silent City’s secretariat is located in Gate 21. If you have questions, input or any thing else regarding Silent City’s work, you are more than welcome to contact us:

Miljøskærm – Vallensbæk Kommune | Miljøskærm & Silent City

The company Miljøskærm has invented a noise barrier of used wind turbine blades. This environmental noise barrier has lowered the noise 6-7 decibels for the citizens who live nearby. This means that their homes are no longer in the category ‘noise congested’, which are areas where road noise are above 58 decibels.

Noise Absorbing Guardrails – Ishøj | NAG1 & Silent City

The company NAG1 has developed a guardrail that creates safe roads as well as reduce noise from traffic. NAG1 has the support of The Market Development Fund to the final development and demonstration of the guardrail that is being set up in Vallensbæk and Ishøj Municipality, in relation to the project Silent City.

Noise Absorbing Guardrails – Vallensbæk | NAG1 & Silent City

The company NAG1 has developed a guardrail that creates safe roads as well as reduce noise from traffic. NAG1 has the support of The Market Development Fund to the final development and demonstration of the guardrail that is being set up in Vallensbæk and Ishøj Municipality, in relation to the project Silent City.

Allocation of funds for traffic noise abatement | Hvidovre

In 2015 and 2016 the City of Hvidovre allocated a budget to noise reduction, which gave the citizens opportunity to apply for funds if they are particularly vulnerable to traffic noise.

Earth berm with recreational opportunities | Solrød Municipality, Realdania and The Danish Foundation for Culture and Sports Facilities

In Solrød the city has used a large stretch of an earth berm along the Køge Bugt motor highway to create a space for activity with innovative motion and recreational opportunities.

Road narrowing and speed limits | Vallensbæk

The City of Vallensbæk narrows two roads – Vallensbæk Torvevej and Strandesplanaden. Both roads will now be two lanes, instead of four, creating one lane in each direction. The city also establishes a number of roundabouts.

Noise barrier on Allingvej – Hvidovre | Vestegnssamarbejdet

Citizens that lives on Allingvej in Hvidovre gets a nearly 800 meter long noise barrier along the Holbæk highway. The noise barrier has become a reality after the citizens for years have fought a tenacious battle for measures to reduce traffic noise.

Noise barrier in residential area – Vallensbæk/Køge Bugt motor highway | ​The Danish Road Directorate

The Danish Road Directorate has in 2016 built a new noise barrier at a residential area near Gjeddesdalvej and Nysøvej in Vallensbæk. The new 600 meter long and four meter high noise barrier has reduced noise from the Køge Bugt motor highway in the area and reduced the number of homes exposed to traffic noise.

Noise barriers along Køge Bugt motor highway | The Danish Road Directorate

Køge Bugt motor highway is the busiest road in Denmark with an average of about 100,000 vehicles a day. In connection with a major renovation of the motor highway, new noise barriers have been built in the Municipality of Køge and the entire stretch of road is also equipped with noise-reducing asphalt.


9 million DKK for noise abatement │Køge

The City Council of the Municipality of Køge has granted 9.1 million kronor for noise barriers in 2017. This means that citizens living near selected road stretches in Køge, and who is bothered by traffic noise, can apply for a noise partnership with the local authority – in such a partnership the municipality covers up to 50 percent of construction costs to reduce noise from traffic.

A strong collaboration takes shape

Noise from traffic is easily the worst source of noise in our society. Just in Denmark there are more than 1.4 million Danes affected by traffic noise that is above the Environmental Protection Agency’s recommended limit. And it can have serious consequences like stress, anxiety and, in some cases, death.

Therefore, a number of municipalities in the Køge Bugt area are teaming up with Gate 21 on the project Silent City, which focuses on traffic noise, and the possibilities and results of reducing noise from traffic.

The first demonstration project was conducted in the first half of 2016, when a new sustainable type of noise barrier was tested on a stretch of Vallensbæk. And several demonstration projects are in the pipeline. Stay tuned on this site or on LinkedIn.


Europe’s first Living Lab for traffic noise abatement

Silent City will be a Living Lab which will help to raise awareness, test and develop innovative solutions for traffic noise. In the Living Lab, regions, municipalities, companies, research institutions and citizens can examine, test and develop solutions on a 1:1 scale in a natural urban environment. The goal is both to reduce noise from traffic, promote quality of life and the health of citizens, and simultaneously create growth for Danish companies that supply noise solutions. The initiative will put participating municipalities on the world map in terms of urban noise reduction.


Collaboration partners
The project organization will develop along the way. In the pre-project phase, participants are the following Municipalities: Albertslund, Brøndby, Hvidovre, Ishøj, Køge, Solrød and Vallensbæk, as well as the Capital Region of Denmark.

Several companies and research institutions are linked to the project initiatives. They include NCC, Rockwool, Rambøll, MOE, Delta, Miljøskærm, NAG1, Brüel & Kjær, Delta, Art Andersen, Leapcraft and DTU.

The project is financed by partner municipalities and the Capital Region. In addition, the project has received support for some of the activities from Realdania and through grants from the companies. We’re seeking ongoing project funding from various Danish and European funds.

The project is implemented in two phases. A pilot project carried out in 2015-2016, and the establishment of the Living Lab carried out in 2017-2019.

Project leader
Gate 21

More information
Kirstine Hjorth Lorenzen, headr of Silent City, Gate 21