US lawOregonRegulationsChapter 741 — Department of TransportationDivision 100 — RAILROAD-HIGHWAY CROSSINGS — GENERAL741-100-0040OAR 741-100-0040OAR 741-100-0040. Display of U.S. DOT Inventory NumberLast amended: 2013Length: 13 wordsOfficial source The U.S. DOT crossing number shall be displayed at all public highway-rail crossings.PreviousOAR 741-100-0030