Skip to main content
  1. Home
  2. Emerging Tech
  3. News

Denmark’s smart traffic signals prioritize buses and bicycles to promote sustainability

Add as a preferred source on Google

Even though 40 percent of Copenhagen residents commute by bike every day, the capital of Denmark is pushing further to become a leader in sustainable transportation. In order to achieve Copenhagen’s goal of carbon neutrality by 2025, the city is installing an Intelligent Transport Systems Action Plan to help make bicycles and buses get around easier than ever.

Local officials hope that making bus and bicycle commuting a faster and more efficient process will help get even more citizens out of their cars. That’s why intelligent traffic signals are one of the main points of the Transport Systems Action Plan. By prioritizing buses and bicycle lanes, the smart traffic lights aim to cut bus travel times by up to 20 percent, and bicycle commute times by 10 percent. Installing the intelligent system across Copenhagen will cost the city $8.9 million in the form of 380 traffic lights.

Recommended Videos

bike womanRelated: Germany is building a 100-kilometer ‘Bicycle Autobahn’ exclusively for cyclists

Programmable traffic signals aren’t a new idea, but instead of getting more cars to their destination quicker, this Copenhagen system will focus on speeding up bus and bike lanes. City buses will communicate details about their trip to the system, including geographic position, number of passengers, and scheduling delays. In response, the traffic lights can stay green for up to 30 seconds longer in order to keep buses moving, giving special priority to buses that are overcrowded or running behind schedule.

Intelligent traffic signals will also work alongside systems already in place to help ease the ride of commuting cyclists. For example, Copenhagen’s “green waves” are stretches of road with traffic lights timed specifically so that cyclists never hit a red light, based on an average speed of about 12 miles per hour. The city’s new intelligent traffic signals will help make even more green waves around the city, and will make each zone even more bicycle-friendly by adapting to changes in average speed. So if weather is bad in Copenhagen and bicycles are slowing down against wind or rain, the green waves will be able to light the way for slower bike speeds until the weather clears. Officials expect the system to reduce the number of times cyclists have to stop by 10 percent.

There hasn’t yet been an official statement of when Copenhagen will have the system fully installed with traffic lights up and running. In the meantime, the Danish city is still headed in the right direction with sustainability and environmental initiatives.

Chloe Olewitz
Former Digital Trends Contributor
Chloe is a writer from New York with a passion for technology, travel, and playing devil's advocate. You can find out more…
Google is making Gemini and Search work better with the apps you love
Gemini's guest list is growing, and your favorite apps are invited.
Gemini AI on a phone.

Google has been finding more ways to make Gemini a part of your daily routine, from putting together playlists to ordering groceries through your favorite apps. Now it's expanding those capabilities to more services, with Google Search joining in, too.

The company has announced a new Connected Apps Platform that makes it easier for developers to bring their services to both Gemini and Search. Alongside this, Google is adding new partners to its growing lineup, bringing more of the apps people already use into its AI ecosystem.

Read more
AI bots are now trying to sabotage public health policies, like banning disposable vapes
Thousands of AI bots voted in a public health poll to block sales restriction on disposable vapes. It's like Big Tobacco is back from the dead.
Woman smoking a vape.

In the broad context of AI and its perceived harms, health and medical risks often pop up in the conversation. The warnings even come from frontier AI labs, such as ChatGPT-maker OpenAI and Anthropic, both of which have warned about misusing AI to cook up bioweapons. Security experts have already spotted a few such incidents in the wild, especially with the usage of AI models without any solid guardrails. 

Well, it appears that the risks run deeper. As per an analysis appearing in the British Medical Journal (BMJ), AI bots are now being deployed to influence public policies governing health risks to citizens. In this instance, an attempt was made using AI bots to thwart regulations that aim to restrict the sale of disposable vapes, all while disguising the manipulation efforts as a response from real humans. 

Read more
A tiny smartphone gadget can detect some of the nastiest chemicals in your water
Scientists built a tiny smartphone gadget that can spot toxic 'forever chemicals'
Smartphone-connected drinking water safety sensor Featured

What if checking your drinking water for dangerous chemicals were as simple as plugging a tiny gadget into your smartphone? Researchers in Japan have developed a compact sensor that could make that possible, potentially bringing sophisticated water contamination testing out of expensive laboratories and into people's hands.

Scientists at the Okinawa Institute of Science and Technology (OIST) have created a portable device capable of detecting extremely low concentrations of PFAS, commonly known as "forever chemicals." The findings were published in the journal Biosensors and Bioelectronics, which demonstrate how an inexpensive sensor and a smartphone could make identifying potentially harmful chemicals in water a lot easier.

Read more