| AADT | Average Annual Daily Traffic |
| AASHTO | American Association of State Highway and Transportation Officials |
| AHTD | Arkansas State Highway and Transportation Department |
| CCTV | Closed Circuit Television Camera |
| CMF | Crash Modification Factor |
| DMS | Dynamic Message Sign |
| DRTDP | Delta Region Transportation Development Program |
| EB | Empirical Bayes |
| FHWA | Federal Highway Administration |
| FI | Fatal and All Injury Crashes |
| FS | Fatal and Serious Injury Crashes |
| GEE | General Estimating Equation |
| GLM | Generalized Linear Model |
| GPS | Global Positioning System |
| HSM | Highway Safety Manual |
| IDOT | Illinois Department of Transportation |
| LaDOTD | Louisiana Department of Transportation and Development |
| LED | Light Emitting Diode |
| MoDOT | Missouri Department of Transportation |
| MUTCD | Manual on Uniform Traffic Control Devices |
| MVMT | Million Vehicle Miles Traveled |
| PSA | Public Service Announcement RPM Raised Pavement Markings |
| RSIP | Rural Safety Innovation Program |
| SE | Standard Error |
| SPF | Safety Performance Function |
| SVROR | Single Vehicle Run-off-Road |
| TDOT | Tennessee Department of Transportation |
| USDOT | United States Department of Transportation |
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