| 073 05 | TRAILERS, CARGO, ENCLOSED |
| 073 08 | TRAILERS, WITH ENCLOSED REFRIGERATION UNIT |
| 073 10 | TRAILERS, SEMI, ENCLOSED |
| 073 14 | TRAILERS, SPECIALTY, ENCLOSED, TAG-ALONG |
| 073 15 | TRAILERS, SPECIALTY, FRAME, TAG-ALONG |
| 073 24 | TRAILERS, TRANSPORT, DRY BULK |
| 073 27 | TRAILERS, TRANSPORT, EQUIPMENT, FIXED DECK, TAG-ALONG |
| 073 28 | TRAILERS, TRANSPORT, EQUIPMENT, TILT DECK, TAG-ALONG |
| 073 30 | TRAILERS, TRANSPORT, MACHINERY |
| 073 32 | TRAILERS, TRANSPORT, TANK |
| 073 43 | TRAILERS, UTILITY, ENCLOSED, TAG-ALONG |
| 073 45 | TRAILERS, UTILITY, FLATBED, TAG-ALONG |
| 073 47 | TRAILERS, UTILITY, GOOSENECK |
| 073 50 | TRAILERS, UTILITY, TILT DECK, TAG-ALONG |
| 073 60 | TRAILERS, VARIOUS TYPES (NOT OTHERWISE CLASSIFIED) |