it can serve three tracks at once

This is a Miller Engineering 9781 HO/O Scales Animated Neon Billboard

but working signals can be modeled with the Circuit Board and LEDs in kit #538-144

Model Number: BR4948

Model Number: 13901

Bachmann 00751 North Pole Express HO Gauge Steam Starter Passenger Train Set ProductID_12332801 it can serve three tracksThis is a Bachmann 751 HO Scale North Pole Express Set. All aboard for a Christmas adventure! Signaling with a puff of smoke from its stack and a flash of its headlight, the North Pole locomotive is ready to pull its handsome blue cars around the world. Next stop, Santas Workshop! The North Pole Express is eager to transport passengers on the holiday trip of a lifetime. This ready to run set includes: 2 6 2 steam locomotive with operating headlight,