Msts - Addon - Routes And Trains -5 Of 6-

, however, plays a unique role. It is the “operational glue.” It rarely contains the flashiest locomotives or the longest routes. Instead, it provides:

A route with sharp, unforgiving curves demands shorter, rigid-wheelbase locomotives. A route with a 2.2% ruling grade requires a train with a specific horsepower-to-tonnage ratio. The fifth add-on in a series often provides the “challenge scenario”—the heavy freight on the dry rail, the passenger express fighting a timetable. The train’s physics file (the .eng file) and the route’s grade profile become a single equation to solve. MSTS - Addon - Routes and Trains -5 of 6-