This volume contains transcripts of the hearings before the Senate Committee on Interstate Commerce on the Quarles Bill, which sought to clarify and expand the duties and powers of the Interstate Commerce Commission. Featuring testimony from a wide range of experts and stakeholders, this is an invaluable resource for scholars and researchers studying transportation policy. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.