Basic Model Signals Basic signals known by many modelers 2009 2010 JMRI Dick Bronson Pete Cressman Bob Jacobsen jake@physics.berkeley.edu 1 2009-12-28 RGJ Initial version 2 2010-3-25 PWC Add speed element 2.1 2011-06-13 KWD Add Diverging flag 2.2 2016-04-01 MST Add low appearances 2.3 2016-05-05 MST Add Held and Dark specific appearances Clear Proceed Normal Normal Approach Proceed preparing to stop at next signal Medium Medium Stop Stop Stop Stop Diverging Clear Proceed through diverging route Medium Medium Diverging Diverging Approach Proceed through diverging route preparing to stop at next signal Limited Limited Diverging Unlit Unlit Stop Stop