The Metro A-Line runs from downtown Los Angeles to downtown Long Beach, and about 90% of it's route is along the old Pacific Electric right of way, which ran from 1902 until (under the yesteryear LAMTA) it was discontinued in April 1961.
Here's a circa 1996 A-Line (then Blue Line) train outbound at Willow Station, at the southern end of the private right-of-way, and the beginning of street running in Long Beach
It is leaving the private right-of-way, and entering street level running along Long Beach Blvd. This is the same point where PE trains entered traffic, only at that time, Long Beach Blvd was called "American Ave"
Chris Carson photo