ICC's Expansion of Unregulated Motor Carrier Commercial Zones Has Had Little or No Effect on Carriers and Shippers

Recognizing that changes have occurred in the location of business and industrial activity since the Interstate Commerce Commisssion (ICC) establihed commercial zones in the 1930's, ICC expanded its commercial zones in 1975. The effect of the expanded commercial zones on motor carriers in terms of changes in tonage, area served, rates, revenues, operations, and competition was examined through the use of questionnaires sent to carriers and shippers of 12 zones.