After a successful first run of road switchers (The RS-1), Alco’s second attempt at a versatile four-axle locomotive came in late 1946. This was the stylized RS-2, keeping similar features as the RS-1 (Long carbody and short front nose), but with many upgrades. The most notable features were the rounded carbody and a new 244 prime mover, which increased the horsepower to 1,500, a 500hp upgrade over the RS-1. With the added horsepower, the RS-2 was received well by railroads for its ability to tackle any service it was given.
