[A]  Auto button provided for route indicated
[B]  Max Yellow aspect unless signal ahead shows Green.
[C]  Max Red aspect if signal ahead shows Red.
[D]  Max Yellow unless signal ahead shows Double Yellow or Green 
[J]  Red or Green aspect only.
[M]  Approach Released from Red to Yellow Only
[Q]  Main route approach released from Red if signal ahead is Red  
[R]  Main route approach released from Red
[Y]  Main route  approach released from Yellow
[N]  [B] and [Q]
[1], [2], [3]  Preference order of alternative routes 
{ }  Intermediate signals which are pre-set for this route

