| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 336510 | 336510 | 336510 | Brakes and parts for railroad rolling stock manufacturing | |||
| 336510 | 336510 | 336510 | Buses, trackless trolley, manufacturing | |||
| 336510 | 336510 | 336510 | Industrial locomotives and parts manufacturing | |||
| 336510 | 336510 | 336510 | Light rail cars and equipment manufacturing | |||
| 336510 | 336510 | 336510 | Locomotives manufacturing | |||
| 336510 | 336510 | 336510 | Locomotives rebuilding | |||
| 336510 | 336510 | 336510 | Lubrication systems, locomotive (except pumps), manufacturing | |||
| 336510 | 336510 | 336510 | Mining locomotives and parts manufacturing | |||
| 336510 | 336510 | 336510 | Rail laying and tamping equipment manufacturing | |||
| 336510 | 336510 | 336510 | Railroad cars and car equipment manufacturing | |||
| 336510 | 336510 | 336510 | Railroad cars, self-propelled, manufacturing | |||
| 336510 | 336510 | 336510 | Railroad locomotives and parts (except diesel engines) manufacturing | |||
| 336510 | 336510 | 336510 | Railroad rolling stock manufacturing | |||
| 336510 | 336510 | 336510 | Rapid transit cars and equipment manufacturing | |||
| 336510 | 336510 | 336510 | Rolling stock, railroad, rebuilding | |||
| 336510 | 336510 | 336510 | Streetcars and car equipment, urban transit, manufacturing | |||
| 336510 | 336510 | 336510 | Subway cars manufacturing |