26-09-2013, 07:17 PM
Not ideally placed to review in detail right now (in hotel, laptop with small screen and also things I need to get done for tomorrow) but overall it looks reasonable and certainly clearly presented.
I did notice that you simply quoted the headway formulae without explaining their derivation.
I'll review over this coming weekend in more detail. However on the last page you state 3 aspect signalling; given that from memory on the 2012 paper the discussion is about the traffic on the single line, I believe that this would not be continuous 3 aspect MAS but a few red/green signals each with their own yellow/ green distant (which is called isolated 3 aspect signalling) The headway formula in that case is independent of braking distance as it relates only to the positioning of the stop signals.
I did notice that you simply quoted the headway formulae without explaining their derivation.
I'll review over this coming weekend in more detail. However on the last page you state 3 aspect signalling; given that from memory on the 2012 paper the discussion is about the traffic on the single line, I believe that this would not be continuous 3 aspect MAS but a few red/green signals each with their own yellow/ green distant (which is called isolated 3 aspect signalling) The headway formula in that case is independent of braking distance as it relates only to the positioning of the stop signals.
(26-09-2013, 12:27 PM)Nagasri.Jonna Wrote: Hi all,
Please review the calculations attached for 2012 mainline layout and provide your comments. Please tell me whether the approach I have followed is correct or not.
Regards,
Nagasri.J
PJW