Owner–Operator Independent Drivers Association
The Owner–Operator Independent Drivers Association is a North American international trade organization dedicated to the interests of truck drivers. Founded in 1973, OOIDA represents professional drivers and works to affect state and federal legislation regarding the trucking industry. Its nearly 160,000 members of OOIDA are men and women in all 50 states of the United States of America and Canada who collectively own and/or operate more than 240,000 individual heavy-duty trucks and small truck fleets. 
The association's headquarters are located near Kansas City in Grain Valley, Missouri, and is staffed with 325 full-time employees. Officers and directors of the OOIDA are all either former or current professional truck drivers, and are elected by the organization's members. The OOIDA is the publisher of Land Line Magazine, a trade publication designed to keep truck drivers informed of current regulations, products, and services.