There are versions for each tunnel bore:
Type S: Single track, rectangular cross section.
Type D: Double track rectangular cross section.
Type M: UK mainline double track, circular cross section.
Type T: UK single track, small circular cross section.
• DLS Download Link - Single Trackside Portal
• DLS Download Link - Double Trackside Portal
These portals are unscripted and attach to the track in the same way as a signal or a speedboard.