232 articles
Panama Canal Railway
The Panama Canal Railway is a railway line across the Isthmus of Panama linking Colón with Panama City, opened in 1855 as the first railroad to run from ocean to ocean.
Panvel-Karjat Railway Corridor
The Panvel-Karjat Railway Corridor is a 29.5 km double-line suburban railway linking Panvel in Navi Mumbai to Karjat, built to cut CSMT-Karjat journeys by 25 to 30 minutes.
Paris Metro Line 14
Paris Metro Line 14, known as Météor, is a fully automated driverless line of the Paris Métro that opened in 1998 and links Saint-Denis Pleyel to Orly Airport.
Parramatta Light Rail
The Parramatta Light Rail, also called the Westmead and Carlingford Line, is a light rail line in Sydney, Australia, running 12 kilometers from Westmead to Carlingford via the Parramatta CBD, opened in December 2024.
Pascack Valley Line
The Pascack Valley Line is an NJ Transit commuter rail line from Spring Valley, New York, to Hoboken Terminal via Hackensack, operated under contract with Metro-North Railroad.
Pennsylvania Railroad
The Pennsylvania Railroad, known as the PRR, was an American railroad chartered in 1846 that grew into the country's largest and merged into Penn Central in 1968.
Piccadilly line
The Piccadilly line is a deep-level line of the London Underground, running from Cockfosters to Heathrow Airport and Uxbridge. It opened in 1906 and serves 53 stations.
Pink Line (Delhi Metro)
The Pink Line is Line 7 of the Delhi Metro, running from Majlis Park to Shiv Vihar and forming India's first fully operational ring metro line.
Positive train control
Positive train control (PTC) is a communications-based rail safety system, mandated by the Rail Safety Improvement Act of 2008, that automatically slows or stops trains not operated safely.
Purple Line (Namma Metro)
Purple Line (ನೇರಳೆ ಪಥ), Namma Metro's east–west line in Bengaluru, 43.49 km, 37 stations, Whitefield (Kadugodi) to Challaghatta, operated by BMRCL; opened fully October 9, 2023; busiest corridor, 76-minute end-to-end ride.
Q (New York City Subway service)
The Q, or Brighton Local via Broadway Express, is a New York City Subway service from 96th Street on Second Avenue to Coney Island–Stillwell Avenue, Brooklyn.
Qinghai–Tibet railway
Qinghai–Tibet railway (青藏铁路), the 1,956-km Xining–Golmud–Lhasa line opened July 1, 2006; world's highest railway at 5,072 m Tanggula Pass, crossing roughly 550–632 km of permafrost with active-cooling roadbeds and pressurised oxygen-enriched carriages.
R (New York City Subway service)
The R, formerly the Broadway-Fourth Avenue Local, is a New York City Subway service that runs local between Forest Hills-71 Av in Queens and Bay Ridge-95 St in Brooklyn.
Rail Baltica
Rail Baltica is a program to build an electrified, standard-gauge railway for passenger and freight linking Tallinn and Riga to Kaunas and Warsaw, the European Union's flagship North Sea–Baltic corridor project.
Rail defect detection
Rail defect detection is the set of non-destructive testing methods, chiefly magnetic induction and ultrasonic testing from detector cars, used to find internal rail flaws before they cause breaks.
Rail fastening system
A rail fastening system attaches the rail foot to the sleeper using components such as a spring clip, rail pad, insulator, and shoulder or screw anchor.
Rail grinding
Rail grinding is a railway maintenance process that removes a thin layer of metal from the railhead with rotating abrasive stones, introduced by the Pennsylvania Railroad in the late 1930s.
Rail lubricator
A rail lubricator is a trackside or on-board device that applies grease or friction modifier to wheel flanges in curves, reducing wear, noise, and energy consumption while preserving traction and braking.
Rail profile
A rail profile is the cross-sectional shape of a railway rail, made up of a running head, web, and foot, in bullhead or flat-bottom (Vignole) families standardized under EN 13674-1 and AREMA.
Rail yard
A rail yard, also called a railroad yard or classification yard, is a complex of tracks where trains are received, sorted by destination, assembled, serviced, and dispatched.
Railroad switch
A railroad switch, also called a turnout or, in British usage, points, is a mechanical installation that moves tapered rails to direct a train from one track onto another.
Railroad tie
A railroad tie, also called a railway sleeper, is a transverse support laid on ballast beneath two rails, holding them at gauge and spreading wheel loads into the roadbed.
Railway electrification
Railway electrification supplies trains with power through overhead lines or conductor rails, so trains need not carry fuel, and 35% of the world's network was electrified in 2022.
Railway signalling
Railway signaling, also called railroad signaling or railway traffic control, is the system of signals, track detection, and interlocking that keeps trains safely separated and prevents conflicting movements at junctions.
Railway track
Railway track, also called the permanent way, is the structure of rails, fastenings, sleepers, and ballast or concrete slab, built to guide trains and carry wheel loads into the ground.
Red Line (Delhi Metro)
The Red Line (Delhi Metro Line 1) runs from Shaheed Sthal in Ghaziabad to Rithala in Delhi, and opened in 2002 as the Delhi Metro's first line.
Red Line (Mumbai Metro)
The Red Line, numbered Line 7, is an elevated Mumbai Metro corridor along the Western Express Highway from Gundavali to Dahisar East, opened in 2022 and 2023.
Red Line (Namma Metro)
The Red Line, also called the Namma Metro Red Line, is a planned 37.8 km Bengaluru metro corridor from Hebbal to Sarjapur, designated Phase 3A.
Red Line Extension
The Red Line Extension is a Chicago Transit Authority project extending the Red Line 5.5 miles south to 130th Street, with four new stations, opening in 2030.
Rete Ferroviaria Italiana
Rete Ferroviaria Italiana (RFI) is the company of the FS Italiane Group that manages Italy's national railway infrastructure, founded on 1 July 2001 and based in Rome.