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Blog Entry# 302574
Posted: Dec 12 2011 (19:47)
16 Responses
Last Response: Dec 12 2011 (20:23)
16 Responses
Last Response: Dec 12 2011 (20:23)
i have one more query:
if anyone remembers the good old days of railways, the loco pilot used to throw a key shaped ring at passing stations...can anyone plz tell me what where those?
if anyone remembers the good old days of railways, the loco pilot used to throw a key shaped ring at passing stations...can anyone plz tell me what where those?
12 Public Posts - Mon Dec 12, 2011
A token block system uses a physical item (the token) of some sort, such as a ball as in the Neale's Ball token system , which is physically carried or manipulated in some way to indicate permission for a train to enter a block of track. A tokenless system, such as may be obtained by a combination of interlocking and semaphore signals, does not require the train crew to carry or manipulate anything tangible to enter or leave a block of track; they follow the signals and interlocking handles the rest.
(There are also token systems where the 'token' is an electronic radio signal with a code on it that is transmitted to the loco; such systems are not in use in...
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(There are also token systems where the 'token' is an electronic radio signal with a code on it that is transmitted to the loco; such systems are not in use in...
more...
3 Public Posts - Mon Dec 12, 2011