Here in Las Vegas I'd say that ~90% of the red are LED, 75% of green and only a small handfull (probably a test) of yellow are LED based. All new signals are LED based, except for yellow. Most of the pedestrian signals are now LED based. We also are seeing more of the pedestrian signals that give a flashing hand with a countdown timer to when the traffic signal will turn from green to yellow. We still have a huge problem on "The Strip" with pedestrians crossing against the signal on red lights. The only way we have found to combat this is to elevate the crosswalks above the road...
