# Liste des sigles de l'AAR débutant par W
## W

* WA - Western Railway of Alabama; Seaboard System Railroad; CSX Transportation
* WAB - Wabash Railroad; Norfolk Southern
* WACR - Washington County Railroad
* WACX - PCS Phosphate Company
* WAGX - PCS Phosphate Company
* WAL - Western Allegheny Railroad
* WAR - Warrenton Railroad
* WAS - Waynesburg Southern
* WATC - Washington Terminal Company
* WATR - Waterville Railroad
* WAW - Conrail
* WBC - Wilkes-Barre Connecting Railroad
* WBCX - Williams Brothers Concrete
* WBMX - Lauhoff Grain Company
* WBTS - Waco, Beaumont, Trinity and Sabine Railway
* WC - Wisconsin Central Railway; Canadian National Railway
* WCCL - Wisconsin Central Railway; Canadian National Railway
* WCDX - Far-Mar-Co, Inc.
* WCHX - Walter Haffner Company
* WCRC - Washington Central Railroad
* WCRX - United Grain Corporation
* WCTR - WCTU Railway
* WCTX - West Central Cooperative
* WE - Wheeling and Lake Erie Railway (1991-Current)
* WECX - Westinghouse Electric Corporation
* WEIX - Wilbur-Ellis Company
* WELX - Welland Chemical, Inc.
* WEPX - Wisconsin Electric Power Company
* WESX - BC Timber, Ltd.
* WFAX - Western Fuels Association, Inc.
* WFCX - Western Farmers Electric Cooperative
* WFE - Western Fruit Express; Burlington Northern Railroad
* WFIX - WFIX Partners; First Union Rail
* WGBX - W. G. Block Company
* WGCR - Wiregrass Central Railroad
* WGRR - Williams and Grand Ronde Railroad
* WHCX - Western Hay Corporation
* WHI - Burlington Northern Railroad
* WHN - Conrail
* WHSX - GE Rail Services
* WICT - Wisconsin and Calumet Railroad
* WIF - West India Fruit and Steamship Company
* WIGX - Wigeon Car Company
* WISX - Wisconsin Power and Light
* WITX - Continental Carbon Company
* WIWR - Wisconsin Western Railroad
* WKRL - Western Kentucky Railway
* WKS - Wanamaker Kempton and Southern
* WLE - Wheeling and Lake Erie Railway (1880-1949)
* WLFB - Wolfeboro Railroad
* WLO - Waterloo Railway
* WLPX - West Lake Polymers
* WM - Western Maryland Railroad; Baltimore and Ohio Railroad; Chessie System; CSX Transportation
* WMSC - White Mountain Scenic Railroad
* WMSR - Western Maryland Scenic Railroad
* WMWN - Weatherford, Mineral Wells and Northwestern Railway
* WN - Wisconsin Northern Railroad
* WNFR - Winnifrede Railroad
* WNGX - Western Natural Gas Company
* WOD - Washington and Old Dominion Railroad
* WP - Western Pacific Railroad; Union Pacific Railroad
* WPGX - Western Paving Construction Company
* WPLX - GE Rail Services
* WPMW - Western Pacific Railroad (Maintenance of way)
* WPRR - Willamette and Pacific Railroad
* WPSX - Wisconsin Public Service Corporation
* WPY - White Pass and Yukon Route
* WRA - Western Railway of Alabama; Seaboard System Railroad; CSX Transportation
* WRDX - Iowa-Illinois Gas and Electric Company
* WREX - Western Refrigerator Express
* WRL - Western Refrigerator Line
* WRLX - Relco Tank Line
* WRNX - Gulf Oil Products Company; Chevron USA, Inc.
* WRPX - Public Service Company of Indiana
* WRRC - Western Railroad Company
* WRSX - Scholle Corporation
* WRTX - Western Rail Leasing Corporation
* WRWK - Providence and Worcester Railroad
* WRX - Western Refrigerator Line Company
* WS - Ware Shoals Railroad
* WSCX - Buffalo Brake Beam Company
* WSOR - Wisconsin and Southern Railroad
* WSOX - Wisconsin and Southern Leasing Company
* WSR - Warren and Saline River Railroad
* WSS - Winston-Salem Southbound Railway
* WSX - National Steel Corporation (Weirton Steel Division)
* WSYP - White Sulphur Springs and Yellowstone Park Railway
* WT - Weldwood Transportation, Ltd.
* WTCO - Western Transportation Company
* WTCX - Weyerhaeuser Company
* WTOH - Western Ohio Railroad
* WTRY - Wilmington Terminal Railroad
* WTSE - West Shore Railroad
* WTTX - Trailer Train Company
* WUTX - Washington Utilities and Transportation Commission (scale test cars)
* WVCX - Westvaco Corporation
* WVN - West Virginia Northern Railroad
* WVRR - Whitewater Valley Railroad
* WW - Winchester and Western Railroad
* WWR - Washington Western
* WWLX - LaRoche Industries, Inc.
* WWSX - Standard Car Truck Company
* WYCX - Weyerhauser Canada, Ltd.
* WYS - Wyandotte Southern Railroad