
| ADA | Americans with Disability Act |
| ARDVAC | Advanced Roadway Debris Vacuum |
| ASI | acceleration severity index |
| A2LA | American Association for Laboratory Accreditation |
| Caltrans | California Department of Transportation |
| CDC | collision deformation classification |
| CG | center of gravity |
| CIP | critical impact point |
| CNRB | Constrained Nodal Rigid Body |
| CSCM | Continuous Surface Cap Model |
| DAS | data acquisition system |
| deg | degree(s) |
| DOT | department of transportation |
| ext | exterior |
| FE | finite element |
| FRP | fiber-reinforced polymer |
| ft | foot, feet |
| g | acceleration due to gravity |
| GDOT | Georgia Department of Transportation |
| HDPE | high-density polyethylene |
| HPBO | heavy-post blocked-out |
| HSS | hollow structural section |
| in. | inch(es) |
| IEC | International Electrotechnical Commission |
| ISO | International Organization for Standardization |
| kg/m3 | kilograms per cubic meter |
| kPa | kilopascals |
| ksi | kips per square inch |
| lb | pound(s) |
| lb/ft3 | pounds per cubic foot |
| lat. | latitude |
| LON | length of need |
| long. | longitude |
| MA | moving average acceleration |
| MASH | Manual for Assessing Safety Hardware |
| MGS | Midwest Guardrail System |
| m | meter |
| mi/h | mile(s) per hour |
| MPA | megapascals |
| MwRSF | Midwest Roadside Safety Facility |
| N/A | not applicable |
| NIST | National Institute of Standards and Technology |
| ODOT | Oregon Department of Transportation |
| OIV | occupant impact velocity |
| ORA | occupant ridedown acceleration |
| OSHA | Occupational Safety and Health Administration |
| PennDOT | Pennsylvania Department of Transportation |
| PHD | peak head deceleration |
| PROWAG | Public Right-of-Way Accessibility Guidelines |
| psi | pounds per square inch |
| PVC | polyvinyl chloride |
| ROW | right-of-way |
| RSVVP | Roadside Safety Verification and Validation Program |
| s | second(s) |
| sch | schedule |
| TBTA | Triborough Bridge and Tunnel Authority |
| THIV | theoretical head impact velocity |
| TL | test level |
| TRAP | Test Risk Assessment Program |
| TTI | Texas A&M Transportation Institute |
| TxDOT | Texas Department of Transportation |
| UV | ultraviolet |
| VDS | vehicle damage scale |
| vert. | vertical |