Imagine a world where traffic lights actually work in your favor, especially if you're on a bike or walking. Sounds like a dream, right? Well, in the U.K. city of Leeds, this dream is becoming a reality—but it’s not without its controversies. Here’s how it works: if you’re cycling along a bike path and approach a street, the traffic light can automatically turn green for you, or stay green if you’re already halfway across. But here’s where it gets controversial—should cyclists and pedestrians always have priority over cars? Let’s dive in.
Leeds is one of a growing number of cities testing cutting-edge technology that uses sensors, anonymous data, and artificial intelligence (AI) to make crossing streets safer and more efficient. Developed by VivaCity (known as Viva in the U.S.), these sensors can detect cyclists and pedestrians from over 200 feet away. In some cases, cyclists might never need to stop at a corner, and pedestrians can keep walking without breaking their stride. Cities can even program traffic signals to give cyclists either a shorter wait or full priority. But this raises a question: Is this fair to drivers, or does it unfairly tilt the scale toward non-motorists?
Traditionally, traffic signals force pedestrians and cyclists to press a ‘beg button’ and wait—or risk their lives crossing against a red light. And if automated sensors exist, they’re usually only designed for cars. Matt Shaw, head of product at VivaCity, explains, ‘At the moment, a lot of traffic signals don’t detect cyclists. They either operate on a fixed schedule or detect vehicles but ignore bikes.’ Wires embedded in the pavement can detect metal, but they often miss bicycles entirely. This new technology changes that—but is it too much of a good thing?
VivaCity’s system goes a step further by analyzing direction, so the automatic walk sign isn’t triggered if a pedestrian is just passing by without intending to cross. It also counts the number of people waiting, allowing cities to adjust signal timing based on demand. Shaw points out, ‘Most traffic controllers have no idea if it’s one pedestrian or a hundred.’ This data-driven approach could revolutionize urban mobility—but it also sparks debates about privacy and equity.
Unlike standard traffic signals, Viva’s system can detect if someone in a wheelchair or an elderly person with a walker is still crossing, holding the green light for them. ‘Being able to know if a pedestrian is still on the road and hold the green light for them is pretty important,’ Shaw says. The data collection is privacy-focused: after the AI analyzes the video feed, it deletes it, retaining only the number of people and their paths, not their identities. But even with these safeguards, some worry about the potential for misuse.
In Leeds, the city hasn’t yet given cyclists and pedestrians full priority at major intersections, but at certain crossings where bike paths or sidewalks meet roads, the sensors already prioritize non-motorists. This tech is part of a larger strategy to become ‘a city where you don’t need a car,’ which includes improving bus services and expanding bike routes and parking. By making streets easier to cross and reducing wait times, the city hopes to encourage more people to walk or bike. But critics argue this could lead to longer commute times for drivers—so where do we draw the line?
Some cities, like New York, are using the underlying data without connecting it to traffic controllers. The NYC Department of Transportation, for example, uses the sensors to track trends, such as the number of bikes or scooters, their speeds, and the paths people take to cross streets. The technology can also identify near misses, helping cities flag dangerous intersections and design interventions, like changing signal timing or banning turns on red. Shaw sums it up: ‘You can’t solve the problem if you don’t understand where people are cycling.’
And this is the part most people miss—this technology isn’t just about convenience; it’s about safety and urban planning. But as we embrace these innovations, we must ask: Are we creating a fairer system, or are we inadvertently favoring one group over another? Let us know what you think in the comments—do cyclists and pedestrians deserve full priority, or should we strike a balance? The conversation is just as important as the technology itself.
