Ohio Trucking Association
www.ohiotruckingassn.org

National Trailer Dealers Association
www.ntda.org

Truck Trailer Manufacturers Association
www.ttmanet.org

National Truck Equipment Association
www.ntea.com

U. S. Department of Transportation
www.dot.gov

OSHA – U. S. Department of Labor
www.osha.gov

Federal Highway Administration
www.fhwa.dot.gov