AUTOMATIC BLOCK SIGNAL by Metro Digital Resources Librarian • April 14, 2016 A series of consecutive blocks which are governed by block signals, cab signals, or both, in which ABS rules apply. The signals in ABS are actuated by a train or engine, or by other conditions affecting the use of a block (CROR). Share:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)Like this:Like Loading... Related