A look at crossovers on Purple (D Line) Extension's first section

Red Line (MBTA) - Wikipedia

K Line (Los Angeles Metro) - Wikipedia

How to Sign up for Public Transportation Discounts with Metro LIFE program

Metro Purple Line Extension Project, Los Angeles - Railway Technology

Space-themed virtual reality experience blasts into Texas for first U.S. show - CultureMap Dallas

Autodesk Civil 3D Help, Rail Design

How to Sign up for Public Transportation Discounts with Metro LIFE program

D Line Subway Extension Project - Section 1 - LA Metro

Ravens Grades & Snap Counts vs. Steelers, Week 18

How to Sign up for Public Transportation Discounts with Metro LIFE program

Does L.A. Need the Santa Monica Purple Line Extension?

FHWA - Center for Innovative Finance Support - Project Profiles