Basic HTML Version
192
Traffic Signal Systems Operations and Design: Isolated Intersections
A
ctivity
32: R
elating
the
L
ength of
the
D
etection
Z
one
to
the
D
uration of
the
G
reen
I
ndication
Observe the simulation at
t
= 49.9. Record your observations on the status of phase 4. What is the color
of the active indication?
Observe the simulation from
t
= 54.1 to 54.3.
•
Observe the simulation on the left of the screen (the 22 foot detector case)
•
Record your observations of the controller status window, noting in particular the status of any calls,
the timing status of phase 4, and the timing processes and timing parameter values for phase 4
•
Also, record the status of the queue being served
Observe the simulation from
t
= 60.1 to 61.4.
•
Observe the simulation on the right of the screen (the 66 foot detector case)
•
Record your observations of the controller status window, noting in particular the status of any calls,
the timing status of phase 4, and the timing processes and timing parameter values for phase 4
•
Also, record the status of the queue being served