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120
Traffic Signal Systems Operations and Design: Isolated Intersections
A
ctivity
19: T
he
ASC/3 T
raffic
C
ontroller
Table 9.
ASC/3 controller observations
Video time interval
Detector calls
Controller responses/other notes
0:00 – 0:55
0:58 – 1:12
1:13 – 1:20
2:40 – 3:00
Call on phase 2 at
t
= 2:55
3:15 – 3:30
Calls on phases 4 and 8
at
t
= 3:21 – 3:23
3:30 – 3:40
Call on phase 2 at
t
= 3:37
3:40 – 4:40
Calls on phases 2, 4, and 6
between
t
= 3:46 and 4:35