Traffic Lights Need a Fourth Color, Study Says: Here's Why

A study proves stoplights need a fourth color: white. Here’s what it signals—and why it makes a ton of sense.

Remember the rules - when traffic signals are out, treat the intersection as a 4-way stop. When all signals are flashing red, treat the intersection as a 4-way stop. When signals on

Do traffic signals need a fourth light for self-driving cars? - Route Fifty

Traffic Light Colors: Why Are Traffic Lights Red, Yellow and Green?

St. George (Utah) Police Department - #SGTHarding saysWhat do you know about traffic lights?? 😁 This graphic is broken down to the basics so, for a little more detail, click here for

Researchers Say Fourth Traffic Light Needed for Autonomous Vehicles

Traffic Light Colors: Why Are Traffic Lights Red, Yellow and Green?

Researchers propose fourth light on traffic signals – white, for AVs

Opinion: Another study shows San Diego police disproportionately stop people of color. Address it. - The San Diego Union-Tribune

How a Fourth Traffic Light Color Could Help Ease Our Transition to Self-Driving Cars

Section 7: Laws and Rules of the Road - California DMV

Do not go into the white light - proposed 4th color on traffic lights

Is a fourth color coming to a traffic signal near you?

Traffic Light Problems- Size of the problem activity by OT Life

Fremont Police Department on X: Know what to do if you come across a traffic signal that's not working! If there are no signals, treat the intersection as a 4-way stop. Treat

Researchers propose fourth light on traffic signals – white, for AVs