Reading list: A First Study in Transportation-Markings: The U.S.
This monograph is a cross-modal study that includes all transport modes safety aids in one nation. It is an adjunct study to the four modal studies. It includes a markings classification as well as a descriptive treatment of those aids. 2nd edition, 1992. Mount Angel Abbey publisher. 1st edition was published by University Press of America; that edition included two other studies.