The Decision Module: By comparing the inputs
Urgency and
Extend Decision Module determines whether to change
the phase or extend the green signal. This Module has 3 inputs: (1)
Selected Phase, (2),
Urgency and (3)
Extend. These inputs are the outputs of
NextPhase and
GreenPhase Modules. When the
Urgency is higher than
Extend, the next phase has heavier traffic condition then the current green
phase and the green signal at the current phase will not be extend. So, the output will change the
phase.
Table 5: Rules derived for the Decision Module [3]
15
Table 5 shows the 23 rules of Decision Module. Here
Yes refers to end of green signal phase and
change to new phase, and
No refers to continuing the green signal.