19-09-2019, 03:08 PM
Your calcs look along the right lines (I haven't checked the details). I got the core part a/b section down from around 30 min to less that 10 min by practice and memorising the conversions from km/h to m/s, and the resulting v^2 values, which are the braking distances at a=0.5 m/s/s, which is common (for each 10 km/h interval from about 50 to 200). They follow enough of a pattern and are distinct enough to remember generally. I would usually leave the last part of the calcs until I had some of the basic work on the layout (I think it suggests you need to plot a signal or two first anyway).
Can we see your layout? You're brave doing ETCS, though if you have the knowledge, go for it! See if you can summarise the principles where you have applied them (annotate) and state that you are following the principles of a certain implementation of ETCS - just like for a colour light layout stating GB mainline practice, but with some help to the examiner working out how you have applied it to the layout. I don't think you should have to list every principle!
Daniel
Can we see your layout? You're brave doing ETCS, though if you have the knowledge, go for it! See if you can summarise the principles where you have applied them (annotate) and state that you are following the principles of a certain implementation of ETCS - just like for a colour light layout stating GB mainline practice, but with some help to the examiner working out how you have applied it to the layout. I don't think you should have to list every principle!
Daniel