We love the underground world of railfans, trains, and railroads. And apart from the most obvious reasons—like the incredible infrastructure, the endless photo opportunities, and the welcoming community—we also love the language that comes along with it.
From the technical terms used by the railroad industry to the railroad slang tossed around between railfans, train terms are often as complex as the trains themselves.
To help, we’ve developed a glossary of phrases you should be familiar with to communicate with fellow train buffs, either on our famous front porch or anywhere else you love taking in the sights!
Common Train Terms You Should Know
We’ll start this off by making an important note: Wikipedia has an impressive glossary of rail transport terms, and that exhaustive list can serve as a meaty supplement to our humble contribution.
With that out of the way, let’s dive in! We’ve divided this into four sections:
- Train Anatomy & Equipment
- Track & Infrastructure
- Operations & Dispatching
- Passenger & Railfan Terms
- Historic & Industry Terms
Train Anatomy & Equipment
C
Cab – The compartment where the engineer operates the locomotive.
Caboose – A crew car that used to be found at the end of freight trains. Not often used today, except on tourist railroads or occasionally as a “shoving platform” on local trains for the conductor to ride on when the train is backing up.
Consist – The complete lineup of locomotives and railcars that make up a train.
Coupler – The mechanism used to connect railcars and locomotives.
D
DPU (Distributed Power Unit) – A remotely controlled locomotive placed in the middle or rear of a train to help move heavy loads. Distinct from a “helper,” which has its own train crew.
H
Helper – Usually, but not necessarily, a pair of locomotives added to a train consist to provide additional tractive effort over mountainous territory—like that between Altoona and Johnstown.
Heritage Unit – A locomotive painted to honor a historic railroad, usually one that is part of the corporate history of the railroad.
Hopper Car – An open-top freight car designed to carry bulk materials such as coal, grain, or stone. The “Hoppers” are bays at the bottom that typically open and allow for dumping or unloading from the bottom of the car.
Horsepower – A measurement of a locomotive’s power output.
K
Knuckle – The hinged locking portion of a coupler.
L
Locomotive – The powered vehicle that provides the force to move a train.
O
Observation Car – A passenger car designed to provide scenic views, a somewhat rare sight.
R
Reefer – A refrigerated box car used to transport perishable goods.
T
Tank Car – A railcar designed to transport liquids and gases. Usually cylindrical.
Truck – The wheel assembly located beneath a locomotive or railcar.
Track & Infrastructure
B
Ballast – The crushed stone beneath railroad ties that helps stabilize the track and improve drainage.
Branch Line – A secondary railroad route that diverges from a mainline and serves smaller communities or industries.
C
Catenary – The overhead wire system used to power electric trains.
D
Diamond – A crossing where two rail lines intersect at grade.
G
Grade Crossing – A location where a road crosses railroad tracks at the same level.
I
Interlocking – A system of signals and switches designed to prevent conflicting train movements through complex track arrangements. CP-MO is the nearest interlocking to The Station Inn; the eastward signals are visible from near our front porch.
M
Mainline – The primary route used by through trains.
R
Right-of-Way – The land on which railroad tracks and infrastructure are located. Typically at least 25 feet from the centerline of the tracks, meaning that you’re probably trespassing if you’re closer than that!
S
Signal Bridge – A structure that supports railroad signals over one or more tracks.
Siding – A secondary track used for passing, meeting, or storing trains.
Spur – A short branch track serving a customer or industry.
Switch – A mechanical installation that guides trains from one track to another, also known as a turnout.
T
Trestle – A bridge made up of multiple short spans supported by a framework of vertical supports.
Turnout – Another term for a switch and its associated trackwork.
Turntable – A rotating platform used to turn locomotives around. There’s one at North 6th St. in Altoona.
V
Viaduct – A long bridge carrying a railroad over roads, valleys, or other obstacles.
W
Wye – A triangular track arrangement used to turn locomotives or trains, such as at the former Cresson Engine Terminal.
Y
Yard – A network of tracks used to assemble, sort, and store railcars.
Operations & Dispatching
B
Block – A section of track governed by signals or train-control systems.
C
Control Point (CP) – A location—nearly always an interlocking—where signals and switches are controlled remotely by a train dispatcher.
CTC (Centralized Traffic Control) – A system that allows dispatchers to remotely manage train movements across large sections of railroad.
D
Dark Territory – Track that operates without signal systems, relying instead on dispatcher authority and other procedures such as track warrant control.
Defect Detector – A trackside device that scans trains for mechanical problems.
Dispatcher – The railroad employee responsible for directing train movements.
H
Helper Locomotive – An additional locomotive used to assist trains over steep grades.
Highball – Informal for authorization for a train to proceed.
Hotbox – An overheated wheel bearing detected by a defect detector.
L
Local Freight – A train that serves industries along a route, making multiple stops to pick up and deliver railcars.
M
Manifest Train – A freight train carrying a variety of different cargo types and railcars.
Meet – When two trains traveling in opposite directions pass each other.
O
Overtake – When a faster train passes a slower train.
U
Unit Train – A train carrying a single commodity—such as coal, oil, or grain—from origin to destination.
Passenger & Railfan Terms
E
Excursion Train – A train operated primarily for tourism, sightseeing, or special events.
R
Railcam – A publicly accessible camera livestreaming railroad activity.
Railfan – A person who enjoys trains, railroads, and railroad operations.
T
Timetable – A published schedule showing train operations, routes, and track information. Note that for freight railroads, the timetable ironically almost never contains any train schedules.
Historic & Industry Terms
C
Conductor – The crew member responsible for overseeing train operations, paperwork, and communication with dispatchers and customers.
E
Engineer – The person responsible for operating the locomotive.
P
Passenger Car – A railcar designed to transport people rather than freight.
R
Roundhouse – A circular or semicircular building used to store and service locomotives, often connected to a turntable.
S
Semaphore Signal – A historic type of railroad signal that uses movable arms to communicate track conditions and movement authority.
Station – A facility where passengers board and exit trains.
T
Telegraph Pole – Historically used alongside railroad rights-of-way to support communication lines between stations and dispatchers. Removed from the main line in Cresson around 1995.
Practice Your Vocabulary At The Station Inn
Now that you’ve expanded your railroad knowledge and terminology, put it to use at The Station Inn, a haven for railfans who love watching trains and exploring landmarks like the Horseshoe Curve and the Railroaders Memorial Museum.
Book a room with us to get started. We’ll save you a spot on our front porch to watch the trains pass on the Norfolk Southern mainline!