Risultati di ricerca
5 giorni fa · Railroad, mode of land transportation in which flange-wheeled vehicles move over two parallel steel rails, or tracks, either by self-propulsion or by the propulsion of a locomotive. Ideally, a railroad should be built in a straight line, over level ground, between large centers of trade and travel.
- The Transcontinental Railroad
Railroad - Transcontinental, Expansion, Industry: The first...
- Track Maintenance
Railroad - Track Maintenance, Repair, Safety: Modern...
- Early American Railroads
Railroad - Early American, Steam Engines, Expansion: As in...
- Intermodal, Freight, Vehicles
Intermodal freight vehicles and systems. An important...
- Signaling
Signaling. Railroad signals are a form of communication...
- Interlocking and Routing
Railroad - Interlocking, Routing, Signaling: The first...
- The Transcontinental Railroad