A bill to amend section 10705 of title 49, United States Code, relating to joint rates and through rates.

Authorizes the Interstate Commerce Commission to prescribe through lines and joint rates for motor carriers of property.

Prohibits the Commission from requiring such a carrier, without its consent, to embrace in such a mandated route substantially less than the entire length of its route and of any intermediate carrier operated in conjunction and under a common management which lies between the termini of such proposed through route unless: (1) such inclusion of lines would make the through route unreasonably circuitous; or (2) the Commission finds that the through route proposed to be established is needed in order to provide adequate, more efficient, or more economic transportation.

Requires carriers participating in a through route and joint rate to promptly pay rate divisions or make interline settlements. Allows the suspension or cancellation of such a route and rate under rules promulgated by the Commission in the event of undue delinquency in the settlement of such divisions or interline settlements.