Signals, Route Relay Interlocking, Cabins and Equipment

Old Signalling Systems on Akola-Khandwa MG Route. (Chaitanya)

I love these cabins!! The person waving the flag was astonished to see me clicking!! They are not used to IRFCA guys it seems.. :) (Abhishek Gopal)

Though I have seen it many a times but do not know the exact mechanism of this. This looks to be for some counter balancing. Location is Mau Aimma on ALD-FD line. (Samar)

Beautifully lined up semaphores gaurd the entry from Pathankot end at Jammu Tawi. Taken onboard Swaraj Express. (Ankit Bharaj)

Colorful semaphores which have stood the test of time over many, many years stand as mute spectators still performing their duties while as their new age counterparts take over. Location : Shivani, in between Birur and Chikjajur. 2010-02-04. (Pawan Koppa)

Some idea of layout of Ghaziabad including station and yard. (Samar)

Lower Quadrant Semaphore signalling on the Thiruvarur - Karaikkudi MG line. This is the home signal at Adiramapattinam (AMM) station. There is no starter signal for most of the stations on this route. Entry into the station is protected by the Home signal

Webb & Thomson electric staff block instrument. This particular example is not from India, but identical electric staff block instruments were used commonly in India. This particular block instrument is from the National Railway Museum, Port Adelaide,

Upper quadrant semaphore signals in Gujarat. March 11, 2011. (Paul Bigland)

Upper quadrant semaphore signals in Gujarat. March 11, 2011. (Paul Bigland)

Semaphore signal replacement in progress at Surendranagar Jn. March 11, 2011. (Paul Bigland)

Bracket semaphore signal replacement in progress at Surendranagar Jn. March 11, 2011. (Paul Bigland)

Semaphore signal gantry at Surendranagar Jn. March 11, 2011. (Paul Bigland)

Semaphore signal at Surendranagar Jn. March 11, 2011. (Paul Bigland)

Lower quadrant semaphore signals at Viramgam Junction. March 11, 2011. (Paul Bigland)

Lower quadrant semaphore signals at Viramgam Junction. March 11, 2011. (Paul Bigland)

Lower quadrant semaphore signals at Viramgam Junction. March 11, 2011. (Paul Bigland)

A pair of Neale's ball token instruments at Ghunsore. Photo by Sanket Gosavi, 2011. (Gallery Administrator)

A Neale's ball token instrument by Kyosan, Ltd., from the Khem Karan station, which somehow ended up in Pakistan's Railway Heritage Museum at Golra. Photo by Mr Iqbal Samad Khan, ex-GM of PR, 2005. (Gallery Administrator)

Tokenless block instrument by S&T Workshop, Podanur. Photo from S&T Workshop. (Gallery Administrator)

Sykes Lock and Block instrument from about 1897. This particular example is not from India, but identical Sykes Lock and Block instruments were used quite widely in India. Photo copyright belongs to the Science and Society Picture Library, UK. Photograph

Neale's tablet token block instrument, manufactured by the Westinghouse Brake and Signal Co. This particular example is not from India but these instruments were widely used in India. This one is from the Thai-Burma railway. Photo by Sir Ross BA, 2011. Cr

Line diagram of Neale's Ball Token Instrument. Scanned from SCR signalling materials. Scan provided by Apurva Bahadur. (Gallery Administrator)

Line diagram of Neale's Tablet Token Instrument. Scanned from SCR signalling materials. Scan provided by Apurva Bahadur. (Gallery Administrator)

Line diagram of Neale's Voucher Instrument. Scanned from SCR signalling materials. Scan provided by Apurva Bahadur. (Gallery Administrator)

Line drawing of Webb and Thomson electric staff single line block instrument. Scanned from SCR signalling material. Scan provided by Apurva Bahadur. (Note: Diagram is linked from single-line block instruments article.) ()