B
HomeLibrariesCopilotSearchProjectsBookmarks
FeedbackHelp Desk
Libraries
Building Codes
Code LibraryIBC — BuildingIRC — ResidentialIFC — FireIPC — PlumbingIMC — MechanicalIFGC — Fuel GasIECC — EnergyNEC — ElectricalModel Codes
Specifications
CSI SpecificationsDOT SpecsTransit SpecsUSACE
Standards
TransportationRailroadFire SafetyAccessibilityStructural
Tools & References
DiagramsAssembliesProductsCalculatorsChecklistsPermits
PricingLog in
Home / Transit Specifications

Transit Authority Specifications

Transit authority design criteria, specifications, standard drawings, and construction references for major US transit agencies. Each document opens an embedded viewer with the canonical source link and sibling navigation within its category.

LA Metro

MRDC Rev 6 (2015)

Los Angeles County Metropolitan Transportation Authority — Los Angeles, CA

Heavy RailLight RailBusBRT
Local terminology: "Metro Rail Design Criteria (MRDC)" for design criteria

Official specification books governing materials, methods, and construction

No standard specifications published for LA Metro.

All categories for LA Metro

Source fidelity:BuildSpec mirrors each transit agency's official terminology and document structure. Embedded viewers pull directly from the agency's public URL where available. Always cross-check against the canonical source link before specifying on a project.