Lyon Study Shows Cyclists Traveling Through Red Lights Could Help Traffic

As part of Lyon’s Urban Mobility Plan aimed at promoting cycling, new traffic signs have been introduced to make it easier for cyclists to navigate intersections. The M12 panels and R19 signals allow cyclists to cross red lights under specific conditions, designed to enhance safety and efficiency on the road. This initiative has been closely studied to assess its effectiveness, especially at transit intersections, and the European Cyclists’ Federation offered its thoughts in a recent blog post.

What’s the R19 Signal?

The R19 signal is a conditional crossing signal specifically for cyclists. It’s a flashing yellow light featuring a bicycle icon and an arrow that shows the permitted directions. Since its introduction in 2012, this signal has enabled cyclists to cross red lights in certain directions, as long as they yield to other road users. This is particularly useful at intersections where traditional traffic lights don’t accommodate cyclists effectively, such as those with tram lines.

The Findings

Researchers evaluated cyclist behavior at 10 different intersections over three key periods: before the signs were installed, shortly after installation, and six months later. They used video analysis, on-site surveys, and safety indicators to gather data.

One of the main takeaways from the study is that many cyclists struggle to recognize and understand these new signals. Detection rates hover around 50%, while comprehension is even lower—only 60% for M12 panels and a mere 32% for R19 signals. The rates show there is room for improvement in educating cyclists about the signs.

Interestingly, the study found that these signals primarily reinforce existing behaviors. The M12 panels seem to legitimize what many cyclists were already doing—crossing red lights. On the other hand, the R19 signal appears to encourage positive behavior, particularly during tram traffic phases, without causing an uptick in unauthorized crossings. CEREMA recommends promoting the R19 signal further to streamline cycling traffic.

Bike signal at intersection (photo CERMA)

In terms of safety, the installation of these signs didn’t lead to any significant changes. However, as more people take up cycling, it would be important to stay vigilant and adapt signage to evolving traffic patterns.

The study noted no rise in accidents following the installation of the new signs. However, researchers caution that this could change as cycling becomes more popular.

Learning from Other Cities

Lyon isn’t alone in exploring traffic light exemptions for cyclists. For instance, Vienna allows cyclists to turn right at red lights at more than 300 locations, and Germany has reported positive outcomes from similar initiatives. Belgium has long permitted cyclists to make these turns and is now expanding its exemptions based on France’s example.

In North America, turning right on red lights is the standard and not just for bicycles but for motor vehicles as well, although there is a growing push for change.

The United Nations Economic Commission for Europe has also proposed incorporating a traffic light exemption panel for cyclists into international road sign conventions. This would help standardize signage across countries, making it easier for cyclists to understand and recognize these critical signals.

Final Thoughts

Lyon’s initiative is a step in the right direction for enhancing cycling infrastructure. While there’s work to be done in terms of educating cyclists about new signs, the potential for improving traffic flow and safety is promising. As cities worldwide look to encourage cycling, Lyon’s findings could serve as valuable lessons for future developments. So, let’s keep riding, stay aware, and help shape a safer and more accessible cycling environment!