Babylon NG
Simply the best definition!

Download it's free

Absolute Block

Wikipedia English The Free Encyclopedia

Download this dictionary
Absolute block signalling
Absolute block signalling is a British signalling scheme designed to ensure the safe operation of a railway by allowing only one train to occupy a defined section of track (block) at any time. This system is used on double or multiple lines where use of each line is assigned a direction of travel.

See more at

© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License

BTS Transportation Expressions Dictionary

Download this dictionary
Absolute Block
A block in which no train is permitted to enter while it is occupied by another train. (49CFR218)