Systems evaluation System identification and evaluation Roadside Hardware Identification and Inspection Handbook (PDF) Handbook Errata for 2023 print edition (PDF) Handbook Errata for 2024 print edition (PDF) Guardrail evaluation resources End Terminal Defect Classifications (PDF) Longitudinal Metal Barrier Defect Classifications (PDF) Transition/End Post Defect Classifications (PDF) Guardrail Evaluation Flowchart for Preservation Projects (Excel) Guardrail Height - Field measuring (PDF) Length of Need - Field Check Method (PDF)
