[Description] A time calculated from the number of approach detector actuations during red. In the absence of a stopline detector, it allows sufficient time to service vehicles queued between the stopline and an advance detector. The phase cannot gap out or be forced of during this interval. The duration of this interval is affected by related parameters including Added Initial (amount of green added per actuation) and Maximum Initial. [Setting] 
Variable Initial Green
M i n i m u m G r e e n
V a r i a b l e I n i t i a l G r e e n
P e d e s t r i a n W a l k
P e d e s t r i a n C l e a r a n c e
G r e e n E x t e n s i o n
M a x i m u m G r e e n
Y e l l o w C l e a r a n c e
R e d C l e a r a n c e