The group's principal activities are to provide transportation and logistics services through its subsidiaries in the unites states, canada and mexico. the group's operating segments are transportation services and truckload operations. the transportation services segment provides over-the-road or long-haul services with lengths of haul in the range of 400 to 3,000 miles; Regional services with lengths of haul generally in the range of 200 to 550 miles and dedicated contract carriage services. the truckload operations segment include consolidation and distribution of less-than-truckload shipments; Coordination of line-haul transportation to company operated service centers and third-party agent facilities for local delivery; Warehousing and distribution services and retail sales of installation supplies. transportation services accounted for 90% of 2001 revenues and truckload operations, 10%.