Hey Paul,
Yes the A, B, C, D is indicating track conditions for Sidings and private owner tracks mostly Class A, Branchlines with older Rails mostly Class B, Mainlines of older Standards are mostly Class C and Higher Standards mostly Class D...High Speed Standards are Class E.
It give only a handful freight trains which can run max. 160 Km/h that are around 100 mph.
The Rails have different standards in what weights per axle may have in maximum.
The most common modern rail is the UIC 60 Standard Rail in Central Europe, it is being used onto most mainlines of older standards and allows train speeds up to 200 Km/h but sometimes reduced by local speed limits or by the used signalling system.
Ya Ingo
Yes the A, B, C, D is indicating track conditions for Sidings and private owner tracks mostly Class A, Branchlines with older Rails mostly Class B, Mainlines of older Standards are mostly Class C and Higher Standards mostly Class D...High Speed Standards are Class E.
It give only a handful freight trains which can run max. 160 Km/h that are around 100 mph.
The Rails have different standards in what weights per axle may have in maximum.
The most common modern rail is the UIC 60 Standard Rail in Central Europe, it is being used onto most mainlines of older standards and allows train speeds up to 200 Km/h but sometimes reduced by local speed limits or by the used signalling system.
Ya Ingo
