tunnelbana, monorail, tåg; ej maglev. Hänvisningar PRDpp. 7, 10, 21–22, 27, 71, 88, 93, 110–113, 115, 121 anonpp. 8, 17, 28, 55–56, 148 Systempp. 16, 36, 78, 80, 83, 132, 219, 235, 253, 259