2013 Q3 increasing capacity

[dorothy.pipet]

for comments please?

[Jerry1237]

As a suggestion, when talking about costs, estimate magnitudes. We can appreciate doing stuff costs money but doubling a railway is far more expensive in time and money than retimetabiling for example.

There are other options as well to do with capacity. So, retimetabling is one, alteration to types of service i.e. divert freight away and increase frequency. Both cheapish options, simple to impliment and rapid. Other items to consider is junction and station capacity. Does quadrupling or resignalling solve the problem if there are a pair of very busy junctions at either end? You could be in for more infrastructure costs such as flyovers. However, flyovers although not cheap can solve restrictions at either end of the line. One last consideration, increase line speed. It may be possible to do that and/or alter the service without physical alteration.

Without seeing the question, it is difficult to reply more fully. With respect to engineering management though, technical solutions are frequently implausible as changes need to be rapid and low cost.

Hope the above helps improve your answer which was reasonable.

Jerry

[dorothy.pipet]

As a suggestion, when talking about costs, estimate magnitudes. We can appreciate doing stuff costs money but doubling a railway is far more expensive in time and money than retimetabiling for example.

There are other options as well to do with capacity. So, retimetabling is one, alteration to types of service i.e. divert freight away and increase frequency. Both cheapish options, simple to impliment and rapid. Other items to consider is junction and station capacity. Does quadrupling or resignalling solve the problem if there are a pair of very busy junctions at either end? You could be in for more infrastructure costs such as flyovers. However, flyovers although not cheap can solve restrictions at either end of the line. One last consideration, increase line speed. It may be possible to do that and/or alter the service without physical alteration.

Without seeing the question, it is difficult to reply more fully. With respect to engineering management though, technical solutions are frequently implausible as changes need to be rapid and low cost.

Hope the above helps improve your answer which was reasonable.

Jerry

Many thanks for your comments. The question paper is attached to my other 2013 question thread (q9 hazard logs) if that helpss.