The Buzz · London Civic Wire

Your London yellow light is shorter than you think

Your yellow light might be shorter than you think

Good morning from the Forest City — yes, the other London. The one that actually matters to us. Let's get into it.

You know that feeling, right? You’re driving down Dundas Street, maybe heading towards the Old East Village for a coffee at the Root Cellar, and you hit a yellow light that seems to last about three nanoseconds. You slam on the brakes, hoping the person behind you isn't texting, or you just floor it and hope for the best. Well, it turns out there’s a whole lot of science, and maybe a little bit of art, that goes into those yellow light timings. And apparently, those engineers are accounting for all of us London drivers who think we can make it.

### The Science of the Stoplight

Look, I've been covering this city for a decade, and traffic lights are always a topic. Whether it’s the debate around the BRT routes (don't even get me started on that again) or just trying to get across town during Western University move-in weekend, we all have opinions on how our lights are timed. This report really dives into the nuts and bolts, explaining that it’s not just some random number pulled out of a hat. There are formulas, averages, and even human reaction times built into these calculations.

Here's a quick look at what goes into it:

* **Speed Limits:** Higher speeds often mean longer yellow lights. * **Intersection Width:** Wider intersections need more time to clear. * **Driver Reaction Time:** Engineers actually factor in how long it takes for a driver to see the light and hit the brakes.

So, next time you're stopped at a red light at Richmond and Oxford, feeling like the yellow barely flickered, just know that someone, somewhere, actually did the math on that. It's not just a Richmond Row problem, it's a physics problem. And it means London's traffic flow, for better or worse, is precisely engineered, even if it doesn’t always feel like it when you're late for a Knights game at Budweiser Gardens.

For more on this and other city stories, tune in to London Morning. Ryan and the team are always on top of what’s happening — catch it live at mornings.live.

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