Talking Transportation Why traffic signals are red, yellow, green — and expensive The first traffic signals were not always the colors you see now. Here’s some history.

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Red, yellow, green and white: Smart vehicles could mean changes for traffic lights By Jeff McMurray, Associated Press | Posted - May 13, 2024 at 2:17 p.m.

Current lights could even suffice, say, by modifying them to flash red and green simultaneously to signal that driverless cars are in charge. The key would be making sure that it's universally ...

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“When we get to the intersection, we stop if it's red and we go if it's green," said Hajbabaie, whose team used model cars small enough to hold. “But if the white light is active, you just ...

Smarter vehicles could mean some of the most dramatic changes for the traditional traffic signal since the yellow light was added more than a century ago By JEFF McMURRAY The Associated Press ...

Researchers are exploring ways to use features in modern cars, such as GPS, to make traffic safer and more efficient. Eventually, the upgrades could do away entirely with the red, yellow and green ...

Eventually, the upgrades could do away entirely with the red, yellow and green lights of today, ceding control to driverless cars.