Ballastless track for tunnels ideas involving the use of precast concrete units with in-fill in-situ concrete, for installation under limited possessions (TM-TS-070)

The recently published "Appraisal of Non-Conventional Track" (R & D Division report TN PACT 6B dated November 1976) by D L Cope refers to the satisfactory performance of ballastless track in tunnels. The question of the long possession required, however for the installation of slab track would be an embarrassment...