Today I learned that the earliest designs for #trafficLights used a single bulb for each phase. The same bulb shone through a green lens on the main street and, at the same time, through a red lens on the cross street.

Source: https://www.kbrhorse.net/signals/history06.html

You got a ticket for running a red. Here's why that yellow light might have seemed short
The engineers behind those yellow lights — including the ones that seem painfully short — say a lot of science goes into how traffic lights are programmed. But they also account for the different ways drivers respond at intersections.
https://www.cbc.ca/radio/ideas/yellow-light-timing-red-light-cam-9.7207266?cmp=rss
Will social media cyclists stop making excuses for running red lights?

We've all seen the videos. Busy urban junctions during peak times. Large numbers of cyclists sailing through red lights while pedestrians cross on green and other traffic waits. The footage is clear. It's infuriating.

West Yorkshire Cycling
Opentrafficmap: Wie ein ESP32 den Straßenverkehr überwacht

Positionsdaten im Sekundentakt: Warum das Auto zum idealen Werkzeug für Überwachung und Tracking wird.

Meister-Tech-Blog
Photos of #trafficlights and the #skytrain in #newwestminster today. Was in the car in between destinations so I didn’t get to take any #photos while outside, but this was the best I got from the car. #lowermainland #ShotoniPhone
😂🤖 Oh, #Bloomberg, once again serving up a riveting tale of "Are You a Robot?" instead of actual news. Who knew Google's $40B could be held hostage by a CAPTCHA? Subscribe now for more thrilling tales of tech and traffic lights! 🚦👀
https://www.bloomberg.com/news/articles/2026-04-24/google-plans-to-invest-up-to-40-billion-in-anthropic #Robotics #TechNews #CAPTCHA #TrafficLights #HackerNews #ngated