Agreed; I wonder, however, if for the purposes of minimizing issues with colorblindness, it might make sense for the yellow/middle/clear-intersection light to be the hollow icon with "go" and "stop" both remaining solid. Angling the housing to prevent snow buildup is a solid principle, but internal heating elements will likely remain necessary in winters just in case of high winds. Even with heating elements that activate near freezing temperatures, LEDs would still remain more efficient than incandescent bulbs.