Lead of crossing is the distance from the_________________?
(A) heel of the switch to the toe of the switch
(B) heel of the switch to the theoretical nose of the crossing
(C) toe of the switch to the theoretical nose of crossing
(D) toe of the switch to the actual nose of crossing
Share this... |
Facebook
|
Twitter
|
Linkedin
|
Whatsapp
|
Your email address will not be published. Required fields are marked *