A Guide to Applying the Safe System Approach to Transportation Planning, Design, and Operations (2025)
Chapter: Acronyms and Abbreviations
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Suggested Citation:
"Acronyms and Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2025. A Guide to Applying the Safe System Approach to Transportation Planning, Design, and Operations. Washington, DC: The National Academies Press.
doi: 10.17226/29147.
Acronyms and Abbreviations
| AACN | advanced automatic crash notification |
| ACN | automatic crash notification |
| ALR/ALS | administrative license revocation or suspension |
| BAC | blood alcohol concentration |
| CD | crash diagnoses |
| CMF | crash modification factor |
| DOT | department of transportation |
| DUI | driving under the influence |
| EMS | emergency medical services |
| EMT | emergency medical technician |
| IRA | injury risk assessment |
| ISA | intelligent speed assist |
| ITS | intelligent transportation systems |
| km/h | kilometers per hour |
| LOS | level of service |
| mph | miles per hour |
| NCAP | New Car Assessment Program |
| NG911 | Next Generation 911 |
| NSC | National Safety Council |
| PCC | professional and community coordination |
| PERF | Police Executive Research Forum |
| SD | standard deviation |
| STEER | Strengthening Traffic Enforcement, Education, and Responsibility |
| VMT | vehicle miles traveled |
| VSL | variable speed limits |
| WHO | World Health Organization |
Suggested Citation:
"Acronyms and Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2025. A Guide to Applying the Safe System Approach to Transportation Planning, Design, and Operations. Washington, DC: The National Academies Press.
doi: 10.17226/29147.
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