Quote:
Originally Posted by hstudent
I recently discovered that a 20mph speed limit between Northwich and Greenbank in Cheshire is only in place because Pacer 142s only run on two axles so cannot safely go over 20mph over a long viaduct. However, if Pacers were banned from the line then the speed limit could be raised to 50mph.
Apparently there can't be one speed limit for one type of train and another for a different type.
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On the line between Birmingham and Derby the linespeen is 125mph for HST's and Voyagers and 90mph for other trains so it is possible to have different linesppends.