User blog comment:Bob.cutlass2/Trains in GTA V/@comment-5335348-20120813193745/@comment-5335348-20120815180625

You said Los Santos had trains in GTA 5, I think you may be referring to GTA San Andreas. If you are, I think you must know that GTA SA and GTA V don't take place in the same timeline, so there is every possibility that there could be no train lines in GTA V.