William O. Douglas,
American Farm Lines v. Black Ball Freight Service…
“ A grant of temporary authority to effectuate single-line service will be authorized only when it is clearly established that the carriers providing multiple-line service are not capable of, or have failed in, meeting the reasonable immediate and urgent needs of shippers or receivers between the points or territories and in respect of the commodity or commodities involved.'Thus it was not enough for the statement to assert simply that DOD desires AFL's single-line service because DOD is interested in economy and efficiency ”
