Highway-Railway At-Grade Crossing Structures: Optimum Design/Installation Practices and Management Program – An Overview (PDF, 5.2 MB) Highway-Railway At-Grade Crossings: Trackbed and Surface Pressure Measurements and Assessments (PDF, 3.3 MB) Highway-Railway At-Grade Crossings: Long-Term Settlement Measurements and Assessments (PDF, 5.6 MB) Highway-Railway At-Grade Crossings: Rideability Measurements and Assessments (PDF, 1.4 MB) Vehicle Tire-Pavement Interfacial Surface Pressure Measurements and Assessments (PDF, 2.9 MB)