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Posts Tagged ‘over-dimensioning

Adonis/Steer unusable capacity

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Maintaining rail assets is expensive, and maintaining high speed rail assets, even more expensive. So unusable capacity is a big problem with Adonis/Steer pattern high speed rail. The scale of the capacity over-dimensioning embedded in the HS2 scheme can be seen from a diagram in Chapter 4 of HS2 Ltd’s 2009 Business Case document.

HS2 trunk and West Coast 2033 long distance forecast daily load factors, according to HS2 Ltd

In the diagram, the straight red line from London to near Birmingham is the planned HS2 trunk, and the green line to the right of it is the existing West Coast Main Line. The numbers alongside the lines represent the percentage load factors for long distance services, as forecast by HS2 Ltd for the year 2033. (It’s worth bearing in mind that HS2 planning is based on very large sustained growth in long distance rail travel, for years into the future.)

Written by beleben

August 23, 2011 at 1:52 pm