Acronym |
Definition |
| YB | Youngstown Belt Railroad |
| YCEU | Inter- Continental Equipment Incorporated |
| YCEU | Inter-Continental Equipment |
| YCKR | Yellow Creek Railroad Company |
| YDHR | York Durham Heritage Railway |
| YFIZ | Yellow Forwarding Company |
| YFIZ | Yellow Forwarding |
| YFSZ | Yellow Freight Services Incorporated |
| YFSZ | Yellow Freight Services |
| YKR | Yorkrail Incorporated |
| YKR | Yorkrail (York Railway) |
| YMCZ | Yangming Marine Transport Corporation |
| YMLU | Yangming Marine Transport Corporation |
| YMLZ | Yangming Marine Transport Corporation |
| YMR | Youth in Model Railroading |
| YMS | Yard Management Software |
| YNSE | Yonge North Subway Extension |
| YNY | Yonkers Amtrak Station |
| YOIU | Triton Container International |
| YRC | York Railway |
| YRO | Year- Round Operations |
| YRP | Young Rail Professionals |
| YRPL | Yelm Roy Prairie Line |
| YS | Youngstown and Southern Railway Company |
| YS | Youngstown and Southern Railway |
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