What is Block limit known as in Railways terms?? 1 Answers What is Block limit known as in Railways terms?? Block Limits ~~~~~~~~ For stations (usually class 'B') on double line sections in absolute block or automatic block territory (and usually with modified lower-quadrant, upper-quadrant, or MACL signalling) a square or rectangular yellow sign with two intersecting black diagonal stripes, and with the words 'Block Section Limit' is provided 180m in advance of the Home signal; it marks the fouling point of the rearmost trailing points connecting to the station. ... more... |