Make HO Scale highways safer and more realistic with these working models from SceneMaster featuring: Two US-style crossbucks with forward-facing LEDs Fits layouts from the 1960s to the present Fully-assembled for easy installation in new or existing scenes Operate with Grade Crossing Signal Controller #949-4359 (sold separately) Check out the full selection of SceneMaster and Cornerstone Crossing acessories here! Grade Crossing Signal Controller