17-09-2010, 02:03 PM
(This post was last modified: 17-09-2010, 02:27 PM by greensky52.)
After reading the notes carefully, I think I have known the route locking principle, including direct and indirect. I would like to practice it in further work.
But still have confusion about 128A(S): I did not understand your statement well. If 107A(M)'s swinging overlap locks 210A N and 215B N, then as soon as it clear its overlap-EM, 215B can be set to R for 128A(S), but now, the train routed from 107 does not head on 128A(S). Why do you still consider 107A(M) in 128A(S) route locking?
Yeah, I agree with you, I think sometimes I did not grasp the point of them, just remember the principle, but not really comprehend them because of the poor reading of Eng. There is not too much time for the exam, I feel great pressure....
Thanks a lot.
But still have confusion about 128A(S): I did not understand your statement well. If 107A(M)'s swinging overlap locks 210A N and 215B N, then as soon as it clear its overlap-EM, 215B can be set to R for 128A(S), but now, the train routed from 107 does not head on 128A(S). Why do you still consider 107A(M) in 128A(S) route locking?
Yeah, I agree with you, I think sometimes I did not grasp the point of them, just remember the principle, but not really comprehend them because of the poor reading of Eng. There is not too much time for the exam, I feel great pressure....
Thanks a lot.