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NTSB
Railroad Accident Report
Abbreviations and Acronyms
| AAR | Association of American Railroads |
| ACSES | Advanced Civil Speed Enforcement System |
| AIS | Abbreviated Injury Scale |
| Amtrak | National Railroad Passenger Corporation |
| ATC | automatic train control |
| BLET | Brotherhood of Locomotive Engineers and Trainmen |
| CFR | Code of Federal Regulations |
| Conrail | Consolidated Rail Corporation |
| CT | computed tomography |
| CRM | crew resource management |
| DOT | US Department of Transportation |
| EMS | Emergency Medical Services |
| eTicketing | electronic ticketing |
| FAST | Fixing America’s Surface Transportation |
| FRA | Federal Railroad Administration |
| GAO | Government Accountability Office |
| MARC | Maryland Area Regional Commuter |
| MCI | mass casualty incident |
| Metra | Northeast Illinois Regional Commuter Railroad |
| MP | milepost |
| NORAC | Northeast Operating Rules Advisory Committee (Operating Rulebook) |
| NPRM | notice of proposed rulemaking |
| NTSB | National Transportation Safety Board |
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