Sec. 61.131  Scope.

    Sections 61.132 through 61.136 apply to a carrier which must file 
concurrences reflecting rates and regulations for through service 
provided in conjunction with other carriers and to a carrier which has 
chosen, as an alternative to publishing its own tariff, to arrange 
concurrence in an effective tariff of another carrier. Limited or 
partial concurrences will not be permitted.