Download or read book Criteria Used by State Highway Agencies to Determine Warrants and Priorities for Warning Devices at Rail-highway Crossings written by John L. Sanford and published by . This book was released on 1977 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to determine the warrants and/or criteria currently used by the individual states for applying various levels of rail-highway crossing warning devices, and what procedures each state uses to determine crossing improvement priorities. The objectives of this research study are: Obtain current information from each state about rail-highway crossing warrants and priorities for warning devices construction or improvements. Examine individual methods used to determine rail-highway grade crossing improvement warrants and priorities. Compare and analyze vehicle-train (VT) exposure indexes that the states use to develop their crossing warning standards and warrants. And, prepare a summary of the survey information and analysis for distribution to participating states so that each state can become aware of the national trends in warrants and priorities for rail-highway crossing warning devices.