When the Blue Line opened in 1990, it marked the first time Los Angeles had rail transit in nearly three decades. Another three decades later, the A Line was joined to the northern section of the L line via new connecting stations downtown, turning it into the world’s longest light rail line. Today it serves 44 stations and 48.5 miles of track between Long Beach and Azusa. This year, four additional stations will open — Glendora, San Dimas, La Verne/Fairplex and Pomona North — making the line ev