Can't find what you need?
Search by road number, railroad name or equipment feature—or describe it to Ask the Conductor.
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Locomotive Identification
Narrow down a locomotive using axle count, body style and visible features.
Use tool →⚙️
Diesel Anatomy
Follow power from the diesel engine to the traction motors and rail.
View diagram →🚃
Freight Car Spotter
Identify common cars by body shape, doors, hatches and outlets.
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Train Consists & Power
See why locomotives can be placed in the middle or rear of a train.
View diagram →🛑
Air Brakes
See the brake pipe, reservoirs and logic of automatic train brakes.
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Signals
Learn basic signal logic and why indications are more than colors.
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Measurements
Gauge, wheel sizes and model-railroad scale comparisons.
View reference →🛤️
Yards & Switching
Learn how railroads classify cars and build trains.
Learn more →