RHEDA CITY as a covered track can be designed both with rail sheathing and with rubber granulate chamber filler elements. Due to the lateral stability inherent in the system, this system is also suitable as a design with continuous rail bedding. In principle, track covering is possible with all common road surfaces - asphalt, concrete (also as a precast element) or paving.
The system structure is not changed in the variant with road covering. Usually, the roadway slab is concreted to just below the rail base, so that the desired rail recess is possible. In contrast, continuous rail bedding involves concreting down to the rail foot, which is, however, naturally supported softly on the roadway slab by an elastic sheathing.
Due to the system design, the components affected by wear - rail and track covering - are installed in such a way that they can be easily separated from the track slab. This means that these components can be replaced at the end of their service life or after complete wear, while essential parts of the track can remain in place. After about eight to twelve years, rail replacement is often necessary, which can be carried out together with renewal of the pavement. The result is a roadway that is practically as good as new.
Covered tracks can also be realized in conjunction with vignol rails if suitable rail profiles are used. More common here, however, are systems with grooved rails, which have higher manufacturing tolerances. Due to low heights, in some cases there is not enough space for the track covering, which places very special requirements on the rail fastening. RAILONE has therefore developed the NV-1 system especially for covered tracks with grooved rails.
