Superliner II

Superliner II
Name	Superliner II
Caption	Amtrak Superliner II bilevel coach on a long-distance train
Service	Amtrak
Manufacturer	Budd Company; later production by Bombardier Transportation
Family	Superliner
Constructed	1978–1981
Inservice	1979–present
Numberbuilt	534
Numberservice	varied
Capacity	varies by car type
Operator	Amtrak; VIA Rail (leased units)

Superliner II is the informal designation for the second-production series of Amtrak's Superliner bilevel passenger cars built for long-distance intercity service in the United States. Derived from the original Superliner design, the Superliner II series incorporated structural, mechanical, and interior refinements intended to improve reliability and passenger comfort on routes such as the California Zephyr, Empire Builder, and Southwest Chief. The fleet has seen decades of service across Amtrak's western network and influenced subsequent bilevel designs in North America.

Design and construction

The Superliner II fleet was developed following Amtrak's initial procurement to modernize long-distance rolling stock previously operated by Santa Fe, Union Pacific Railroad, and Southern Pacific Transportation Company. Manufactured primarily by the Budd Company with subcontracted systems from General Electric and Westinghouse Air Brake Technologies Corporation (Wabtec), the cars employed stainless-steel carbody construction derived from earlier Metroliner and Amfleet practices. Superliner II units featured welded equal-height stainless shells, diaphragms compatible with legacy equipment, and updated trucks based on designs used by Rocky Mountaineer and VIA Rail Canada. Structural engineers working with United Aircraft Corporation-era suppliers implemented improved center sill strength and revised roof curvatures to meet revised Federal Railroad Administration crashworthiness guidelines and to reduce wind resistance on high-elevation routes such as the Sierra Nevada crossings.

Mechanical subsystems included upgraded air-conditioning units by Carrier Global Corporation variants, revised electrical distribution panels compatible with Amtrak's head-end power standards, and semi-active suspension components influenced by studies at Massachusetts Institute of Technology and University of Illinois Urbana-Champaign. Braking systems integrated enhanced disc elements promoted by Association of American Railroads committees after field testing on Coast Starlight consists. Construction took place between 1978 and 1981 at Budd facilities with final assembly checks overseen by Amtrak engineering staff formerly from Penn Central Transportation Company and Conrail.

Interiors and amenities

Superliner II interiors were arranged to serve multiple revenue and service functions, including single-level-lift accessible coaches, roomette and bedroom sleeping cars, dining and café services, and baggage and transition cars. Coach seating layouts were influenced by ergonomic research at Stanford University and featured reclining seats, individual reading lights, and fold-down trays supplied by vendors common to Boeing Commercial Airplanes interiors. Sleeping car accommodations—marketed for routes linking Chicago Union Station with Seattle Amtrak Station and Los Angeles Union Station—contained private toilets, shower modules adapted from marine suppliers used on Carnival Cruise Line vessels, and lockable doors meeting standards advocated by Americans with Disabilities Act guidelines following later retrofits.

Observation and lounge cars in the Superliner II series incorporated panoramic windows inspired by precedents set by Rocky Mountaineer dome cars and featured modular banquette seating by manufacturers who supplied the Metropolitan Transportation Authority. Onboard foodservice equipment was certified by agencies such as the U.S. Food and Drug Administration for public catering, and public address and passenger information systems used audio components developed by Bose Corporation-licensed vendors.

Operational history

Upon introduction, Superliner II cars entered service on Amtrak’s premier western long-distance trains, replacing aging single-level sleeping and coach equipment from the Santa Fe Super Chief heritage fleets and other named trains. Routings included the California Zephyr, Coast Starlight, Empire Builder, and Southwest Chief, where the bilevel profile provided increased capacity on key corridors traversing the Rocky Mountains and Cascade Range. Operational logistics were coordinated with dispatchers at regional divisions of BNSF Railway and Union Pacific Railroad whose freight timetables share right-of-way with Amtrak.

Throughout the 1980s and 1990s the Superliner II fleet supported Amtrak’s marketing campaigns tied to tourism boards such as Visit California and regional transit initiatives coordinated with agencies including the California Department of Transportation. Leasing agreements occasionally provided cars to VIA Rail for cross-border services, and crews received specialized training in bilevel operations at Amtrak training centers formerly located in Reno, Nevada and Chicago, Illinois.

Modifications and refurbishments

Over decades of service, Superliner II cars underwent a series of midlife overhauls addressing HVAC reliability, corrosion control, and ADA compliance. Major refurbishment programs contracted to firms such as Bombardier Transportation and local overhaul shops integrated thrust bearing replacements, interior reupholstery, and installation of computerized diagnostics compatible with Positive Train Control initiatives phased in during the 2000s. Some sleep and dining cars were converted to all-coach configurations to address ridership patterns studied in collaboration with researchers from University of California, Berkeley and Northwestern University.

Technical upgrades also included replacement of incandescent lighting with LED systems supplied by companies with contracts to the U.S. Department of Transportation, addition of Wi‑Fi equipment through partnerships with telecommunications providers like AT&T and Verizon Communications, and retrofits to doorway and vestibule seals recommended by analysts at Oak Ridge National Laboratory.

Accidents and incidents

Superliner II consists have been involved in several high-profile incidents tied to grade-crossing collisions, derailments, and equipment failures. Investigations conducted by the National Transportation Safety Board examined causes ranging from track geometry issues on freight-owned lines to human factors. Notable events prompted recommendations for improved crew training overseen by unions such as the Brotherhood of Locomotive Engineers and Trainmen and infrastructure investments by Federal Railroad Administration grant programs. In certain derailments near mountain passes, emergency response coordination included agencies like the Federal Emergency Management Agency and state departments of transportation.

Preservation and disposition

As Amtrak modernizes its long-distance fleet with new bilevel designs procured under orders involving manufacturers like Siemens Mobility and Stadler Rail, a portion of Superliner II cars has been retired, stored, or offered for sale. Preservation efforts have engaged museums and heritage railways including the California State Railroad Museum, Colorado Railroad Museum, and volunteer-run preservation groups that document equipment lineage. Select cars have been converted to static displays at transportation museums adjacent to historic stations such as Union Station (Los Angeles) and Chicago Union Station, while others were acquired by private excursion operators or cannibalized for parts to support remaining in-service Superliner fleets.

Category:Passenger rail cars of the United States