Authors
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| Nickname | Name | Country | Action |
|---|---|---|---|
| IDOT | Illinois Department of Transportation | US | Browse Items |
| ITRE | Institute for Transportation Research and Education North Carolina State University | US | Browse Items |
| Frink | Frink America | US | Browse Items |
| STS | Safety and Training Services | US | Browse Items |
| PPEMA | Portable Power Equipment Manufacturers Association | US | Browse Items |
| USDA FS | USDA Forest Service | US | Browse Items |
| PDOT | Pennsylvania Department of Transportation (PDOT) | US | Browse Items |
| LRRB | Minnesota Local Road Research Board | US | Browse Items |
| P&D | Payne and Dolan | US | Browse Items |
| Coastal Training | Coastal Training | US | Browse Items |
| LTAP | National Local Transportation Assistance Program Clearinghouse | US | Browse Items |
| VISTA | Video Information System Training Association | US | Browse Items |