Traffic signals are a ubiquitous part of daily commutes, with hundreds of thousands installed across the country, yet their effectiveness often falls short. Drivers frequently encounter delays and confusion at intersections, raising questions about efficiency and design. The reliance on stoplights—despite their widespread use—can create unexpected bottlenecks and frustration for motorists. New research examines why these common road fixtures sometimes fail to function as smoothly as intended.
If you drive a car, you've likely found yourself at a stoplight. They're hard to avoid, with roughly 320,000 estimated to be in the U.S. But getting through them is sometimes harder than you may think it should be.
