I have seen switch on a diamond crossing many times. Just before HWH station there are quite a few of them. The speed restriction on the diamonds before HWH is 5 kmph due to danger of derailment.

Posted by M S M Saifullah on 2008 Apr 07 06:55:52 +0000

This is a movable switch diamond. It's more common than you would imagine. Although the switches mean more maintenance but these work quite well as there is no gap at the crossing, over which the wheel moves. A similar arrangement is the swing nose crossing used in high speed turnouts these days.

Posted by Rajeev Shrivastava on 2008 Apr 07 14:31:15 +0000

Hi I think it the KYN end side of TNA. If yes, then it is in use. I think it is connection of FAst Dn line to Slow Dn line.

Posted by Ranjeet Ramaswamy Iyer on 2008 Apr 08 14:37:13 +0000

You can get any one of three types:

1) Simple Diamond.
2) Diamond with a single switch
3) Diamond with a double switch

Simple Diamonds are quite common.

Diamond with a single switch can be found in some places. One place I remember (which could no longer be there) was south of Lower Parel on the UP Slow line.

Switch on a diamond in the manner of this photograph is, as far as I know, very rare and except for north of Thane, I have not seen such a point anywhere.

Posted by Uttam Padukone on 2010 Feb 14 06:22:48 +0000