| Abbreviation | Definition |
|---|---|
| HC | Hydrocarbon |
| HCA | Big Spring McMahon-Wrinkle Airport |
| HCAT | Hard Chrome Alternatives Team |
| HCI | High Compression Injected |
| HCM | Highway Capacity Manual |
| HCNT | Ho Chunk Nation Transportation |
| HCPT | Henry County Public Transportation |
| HCR | Highway Contract Route |
| HCT | High Capacity Transit |
| HCV | Heavy Commercial Vehicle |
| HCV | Heavy Commercial Vehicles |
| HD | Hammer Down |
| HDC | Hill Descent Control |
| HDD | Heavy Duty Diesel |
| HDDV | Heavy Duty Diesel Vehicle |
| HDFB | Heavy Duty Flat Bed |
| HDPT | Harrisonburg Department of Public Transportation |
| HDV | Heavy Duty Vehicles |
| HDV | Heavy-Duty Vehicles |
| HEART | Helping Everyone Achieve Reliable Transportation |