signal priority

How do they do that? Part II

by LA Metro , November 15, 2011

How do the street signal lights know to stay green a little longer or turn from red to green a little sooner when Metro Rapid and Metro Orange Line buses are approaching? After our original post some of you asked about train signal preemption, which is not the same thing as [continue reading]

How do they do that?

by LA Metro , November 14, 2011

How do they do that? is a new series for The Source that explores the technology that helps keep Metro running and passengers and other commuters moving. Some of it applies directly to the trains, buses and freeways and some of it runs in the background — invisible to nearly [continue reading]