RLBA was selected by the City of Fremont, California, to undertake a study of grade crossings on three rail corridors owned and operated by Union Pacific Railroad, in order to determine the feasibility of establishing Quiet Zones in accordance with federal and state laws governing the use of locomotive horns at grade crossings. The study was performed in accordance with the Federal Railroad Administration's Final Rule, "Use of Locomotive Horns at Highway-Rail Grade Crossings." The study encompassed an inventory of grade crossings in Fremont, analysis of existing conditions, identification of safety improvements, utilizing the Federal Railroad Administration’s Risk Index Calculator, recommending an implementation plan including identification of funding opportunities, and effects coordination with federal, state, railroad and local officials. Included in the study was the organization of a team of experts to conduct an on-site evaluation of Quiet Zone safety measures, crossing by crossing.