| TITrinity Industries Plant 117 | Vidor | TX | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| TTTrinity Tank Car INC Plt 194 | Longview | TX | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| TCTtx Company Calpro Div | Mira Loma | CA | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| UTUnion Tank Car - Cleveland Facility | Cleveland | TX | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| UCUnited Coatings | Baltimore | MD | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| WGWabtec Global Services | Carson City | NV | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| WKWabtec Kansas City Service Center | Kansas City | MO | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| WAWestinghouse Air Brake Company | Wilmerding | PA | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| WAWisconsin and Southern Railroad Company | Horicon | WI | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| ATAero Transportation | Independence | MO | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| ANAlliance NE Car Shop | Alliance | NE | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| ANAlliance, NE (EMD) | Alliance | NE | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| AIAlorton IL Trackwork | Alorton | IL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| AAlstom | Plattsburgh | NY | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |
| AKAlstom Kanona Overhaul Facility | Bath | NY | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| APAlstom PI BART | Union City | CA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| ATAlstom Transportation INC. | New York | NY | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| AAmepower | Miami | FL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| AEAmerican Equipment Company | Boca Raton | FL | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| ATAmerican Turbocharger Technologies | Fremont | NE | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| ARAmsted Rail | Camp Hill | PA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| AEAndress Engineering Associates, Inc | Alabaster | AL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| ASApplied Solutions Group ASG Kershaw | Montgomery | AL | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| AAArab AL Bearing | Arab | AL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| AArcola | Arcola | IL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| ASA. Stucki | Moon Twp | PA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| BMBelton, MO DC | Belton | MO | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| BFBill Freight Car Repair | Douglas | WY | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| BNBinghamton, NY | Binghamton | NY | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| BMBlissfield, MI | Blissfield | MI | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| BABoaz AL Axle Plating | Boaz | AL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| BTBoston Transit Group INC | Portsmouth | NH | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| BHBurns Harbor, IN | Portage | IN | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| CLChandler Leasing, LLC | Plantersville | TX | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| COCleveland OH Trackworks | Cleveland | OH | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |
| CKCorbin KY Car SHop | Corbin | KY | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| CCCRRC CA Corporation-City of Industry | City of Industry | CA | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| CCCRRC CA Corporation-Los Angeles | Los Angeles | CA | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| CMCRRC MA Corporation-Cabot | Boston | MA | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| CMCRRC MA Corporation-Quincy | Quincy | MA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| CMCRRC MA Corporation-Wellington | Medford | MA | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| CNCRRC NJ Corporation-Cherry Hill | Cherry Hill | NJ | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| DIDanvers IL Trackwork | Danvers | IL | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| DRDecatur Recycling (Nucor) | Trinity | AL | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| DKDecoursey KY Relay Material | Covington | KY | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| DIDellner, INC. | Charlotte | NC | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| DNDeming, NM | Deming | NM | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| EMEMD Marshalltown | Marshalltown | IA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| EREmporium Reman | Emporium | PA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| ESEvans Street | Brookville | PA | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |