The RS-2 was Alco's first roadswitcher to incorporate its new 244-Series prime mover. The 1,500-horsepower units were designed for versatility - they were equally at home working road freights or switch runs. If equipped with a steam generator, they were adept at working commuter and secondary passenger runs. Production began in 1946 with just over 350 units constructed for U.S. and Canadian roads before the unit was succeeded by the 1,600-horsepower RS-3 in 1950 (although a few late RS-2s were rated at 1,600 horsepower).

 * Prototypes in Service 1949-1970s
 
 * DCC-Friendly Mechanism w/Clip-Fit Circuit Board
 
 * All-Wheel Drive & Electrical Pickup
 
 * Dual Machined Brass Flywheels
 
 * Heavy Die Cast Split-Frame Chassis
 
 * Powerful Skew-Wound Motor
 
 * Micro-Trains(R) Knuckle Couplers
 
 * Constant Intensity & Directional Headlights
 
 * RP-25 Wheels Operate on Code 55 & Larger Rail