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Kristen Hall-Geisler

Kristen Hall-Geisler is a freelance automotive journalist living in Portland, Oregon. Her work has appeared in the New York Times and on HowStuffWorks.com, PopSci.com, and Wired.com. She is the author of Take the Wheel: A Woman’s Guide to Buying a Car Her Own Damn Self.

Traffic lights

Red Light, Green Light: When Were Traffic Lights Invented?

New apps like EnLighten are trying to help drivers make navigate traffic lights safely with a little help from vehicle-to-infrastructure (V2I) technology.