2011 Headway calculation

[PJW]

Please see comments in the attached.

Generally a reasonable attempt particularly for the non-stop calculations, but you did fall into some of the common traps:
a) confusion between MAXIMUM PERMISSIBLE speed and HEADWAY speed,
b) Not defining all abbreviations
c) Quoting specific formulae without explaining their derivation and demonstrating a "signalling understanding".

I have attached another attachment that I hope you will find useful.  It is intended as a template to guide how calculations for a typical exam paper should be presented / explained.
 
Regarding the "fast following stopping train" you didn't seem to be calculating what you needed to; certainly you did not give an adequate EXPLANATION of how these worked out the headway.  Whereas the calculations you did were ok, they weren't the full story.  In particular you did not give the impression that you understood the signalling rationale- you did not mention the 2nd train at all.

Have a look at some of the other attempted calculations in this section.

Hello,

I have done calcutions for 2011 Mod 2 Mainline Paper. Would be grateful if somebody can check and give some feedback based on their experience.


Thanks & Regards,

Arpan Singhania