| Acronym | Meaning |
| AHS | Automated Highway System |
| IWGDMGC | Interagency Working Group On Data Management For Global Change |
| ILSS | Integrated Logistics Support System |
| A/I | Accident/incident |
| OR | Operational Research |
| NEWS | National Extreme Weather Systems |
| OTS | Office Of Technical Services |
| ALDEN | Alden Electronics |
| UIPPA | See IUPAP |
| NAVSTAR | NAVigation Signal Timing And Ranging System |