[Description] The amount of time by which the green is extended after a vehicle is detected. If the minimum green, variable initial green, Walk, and FDW have all expired, and no approach detector input is currently On, the phase green can terminate (gap out) if the time gap between consecutive vehicles exceeds the green extension time plus the time the detector input remains On while the vehicle is being sensed. [Setting] 
Green Extension
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