Geared steam locomotive
This gearing is part of the machinery within the locomotive and should not be confused with the pinion that propels a rack locomotive along the rack between the rails. The geared steam locomotives that have been built have been for conventional track, relying on the adhesion between wheels and rail.
Omaha Zoo Railroad
Visitors to the Henry Doorly Zoo ride behind one of three locomotives for the trip around the park. Two of the engines are steam locomotives, and though they are similar in the basic principle of their operation, the two locomotives are otherwise quite different and guests can easily distinguish between them. The third engine is a diesel, which operates very differently from the steam locomotives. New coaches have been added and replacing the old coaches.