A new study suggests a fourth, white traffic light could let self-driving cars manage intersections more efficiently ...

Traffic lights today are controlled by computers and other purpose-built systems, but what did people do before computers were a thing? You may be surprised.

I write about money. I’ve been reviewing tax software and services as a freelancer for PCMag since 1993. Along the way, I took on reviews of other types of business and personal finance technology.

Learn about the Windsor street light initiative aimed at cutting energy use and maintenance costs through LED conversions.