With six stations on 6.8 km of track , the Scarborough RT is a line built almost all above the ground , and which has no direct tracks that connect to the other lines and uses a different trains . It uses the Intermediate Capacity Transit System ( ICTS ) trains which are very different from subway trains . Spanning six stations over 6.8 k of track , the Scarborough RT is an intermediate-capacity line built almost entirely above ground , which has no direct track connections to the other lines and uses a separate fleet of Intermediate Capacity Transit System ( ICTS ) trains based on dramatically different technology ( similar to the those on the Vancouver SkyTrain ) .