Atlas O-Scale Track and Signal Tutorial – Part 2 of 2 by adam October 22, 2021 Part 2 of my 2 part tutorial series covering the installation and configuration of Atlas O 3-rail track, switches and signals. In part 2 we cover the Atlas signal system. Enjoy! More stuff at www.ericstrains.com See also ML1 Project complete Details | CPEC | Pakistan Railways | پاکستان | Railroad