Many new traffic signals have reflective yellow frames around them. They're designed to make the signals more visible to humans, but I imagine they will help au

Many new traffic signals have reflective yellow frames around them. They're designed to make the signals more visible to humans, but I imagine they will help autonomous vehicles' vision systems find the signals, too. https://highways.dot.gov/safety/proven-safety-countermeasures/backplates-retroreflective-borders https://highways.dot.gov/safety/proven-safety-countermeasure...