IRSE Exam Forum › MODULES › Module 3 › Principles Queries etc v
non-reciprocal locking


Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Linear Mode
non-reciprocal locking
onestrangeday Offline
Senior Member
****
Posts: 70
Threads: 21
Joined: Nov 2010
Reputation: 0
#1
16-05-2011, 12:57 PM (This post was last modified: 16-05-2011, 12:58 PM by onestrangeday.)
Hi Signalling professional:

Currently, I am reading the railway signalling book (by O.S.Nock) and on page 54 it explained the term ''non-reciprocal locking'' and ''delayed yellow condition''. But I still don't get what it is trying to explain.

Can anyone explain it plainly?

sorry for my poor comprehension skill on the book


thanks

Find
Reply


Messages In This Thread
non-reciprocal locking - by onestrangeday - 16-05-2011, 12:57 PM
RE: non-reciprocal locking - by PJW - 17-05-2011, 05:43 PM
RE: non-reciprocal locking - by onestrangeday - 18-05-2011, 02:06 PM
RE: non-reciprocal locking - by fil - 18-05-2011, 09:29 PM
RE: non-reciprocal locking - by PJW - 18-05-2011, 10:23 PM
RE: non-reciprocal locking - by onestrangeday - 19-05-2011, 06:57 AM

Forum Jump:


Users browsing this thread: 1 Guest(s)