. . . . . . . . "O-Train" . "the original extension plan" . . . "LRT" . . "future North-South Light-rail line" . "light-rail" . "O-Train light rail" . . . . . "2001-10-15" . . . . . "Ottawa O-Train" . . . . . . . . . . . "north-south light rail expansion project" . . . "O-Train bridge" . . . . . . . . . "2014 sinkhole" . . "light-rail service" . . . . . "light-rail system" . "O-Train#2014 sinkhole" . . . . . . "2" . "2001" . . . . . "light rail" . . . . . . . . "18" . . "O-Train" . . . . . .