The support layer keeps the track geometrically in position and position, distributes loads to the substructure and forms a flat and load-bearing platform on the track. The material of the support layer is a track-wrap or stripe.
For the support layer, the year of installation, the year of screening, the type of support layer, the strength class of the support layer, the thickness of the support layer, the track number, the maintenance area, the position track symbol and the initial and final location (km+m) are indicated.
The material covers railways owned by the Finnish Transport Agency.
The source system of the data is the track object management application (RATKO) of the Track Infrastructure Management System (RATKO).
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