The correct relation between curve lead (CL), switch lead (SL) and lead of crossing (L) is given by__________________?

A. L = (CL+SL)/2

B. L =CL-SL

C. CL = L SL

D. SL = L + CL

Be the first to comment if anything wrong with this mcq
Your comment successfully submitted!
It will automatically posted after review and approval by our staff member.