| osha.gov | Occupational Safety and Health Administration (OSHA) |
| ooida.com | Owner Operators Independent Drivers Association |
| nitl.org | The National Industrial Transportation League |
| agc.org | The Associated General Contractors (agc) Of America |
| tmta.com | Texas Motor Transportation Association - Texas Motor Transportation Association |
| ptdi.org | Professional Truck Driver Institute, Inc. - Advocates Of Safety Standards In En |
| nccco.org | Cco - National Commission For Certification Of Crane Operators - An Independent |
| truckload.org | The Truckload Carriers Association |
| truckline.com | American Trucking Association |
| truckingshow.com | The Mid-America Trucking Show |
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