Check with NASTC, the National Association of Small Trucking Companies.
From NASTC's website:
NASTC "is dedicated to helping small trucking companies succeed in a growing competitive industry. We have developed many programs, products and services to help our members. You will find that most of what you need is available through your NASTC membership. We would love to discuss the benefits of NASTC membership for your company with you. It is important for us to determine if joining our group is a good business decision for you. If what we are doing won't save your company a substantial amount of bottom line dollars we would recommend that you not join NASTC. Give us a call at 1-800-264-8580 or e-mail us at firstname.lastname@example.org"