U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 49Chapter IIPart 213Subpart D - Subpart D—Track Structure
§ 213.101 - Scope.
§ 213.103 - Ballast; general.
§ 213.109 - Crossties.
§ 213.110 - Gage restraint measurement systems.
§ 213.113 - Defective rails.
§ 213.115 - Rail end mismatch.
§ 213.118 - Continuous welded rail (CWR); plan review and approval.
§ 213.119 - Continuous welded rail (CWR); plan contents.
§ 213.121 - Rail joints.
§ 213.122 - Torch cut rail.
§ 213.123 - Tie plates.
§ 213.127 - Rail fastening systems.
§ 213.133 - Turnouts and track crossings generally.
§ 213.135 - Switches.
§ 213.137 - Frogs.
§ 213.139 - Spring rail frogs.
§ 213.141 - Self-guarded frogs.
§ 213.143 - Frog guard rails and guard faces; gage.
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