Sr. DEN means Sr. Divisional Engineer (Civil). This particular stretch would be his responsibility for maintenance

The sign on the left is for raising the pantograph. The sign on the right instructs the driver to close the DJ (main circuit breaker) and power up the loco.

Its interesting that AFTC is being used in Kamshet area. I wonder if its being used all over the Pune Lonavala section. Nice work Apu Saheb!

This is an Audio Frequency Track Circuit choke. It is a better version of the usual track circuit system used. The frequencies measured are the ones that are being sent through the rails as current. The cables you see conneced to the track are the ones related to this Track Circuit. The equipment belongs to Siemens I think.

Yes that's correct. The Raj has MPS of 120kmph on the SC-KZJ Section, however some sections have lower permamnent restrictions like this one.

Yes, this is a Speed Restriction for the Rajdhani. The territory must be capable of 115 to 120. Hence this board.

This is a Switch Expansion Joint. Expansion is not really contained on LWR but is minised. This is why these SEJs are needed. You will find them all over LWR territory.

Also, this particular joint seems to have two types of rails. I feel that the two rails have different dimensions. One of them might be 60 KG and the other might be 52. Am not sure of this though.

Excellent pics Ashish - note the catenary of the Pune - Mumbai line in the background. Pune on the left, Lonavala 16km on the right.

This is a board providing details for an undergound electrical cable running between Ernakulam Jn and Ernakulam Town. It's an 11kV (11000 volt). The contact number of the official concerned have been provided below.

I meant overcrowded so the word 'fully crowded' :)