At this stage, you display the scheduled events and move to the point where the traffic lights first change.
1. Select Analyze > Show.
2. Click Future in the Display dialog box.The north-south traffic lights turn yellow after 20 seconds. This indicates the effect of setting the ns_green_time parameter.
3. Select Go > GoExtend.Simulation Time: 20 seconds.
GoExtend advances the simulation and increments the clock until the next change occurs in the system status - when the north-south lights turn yellow.
Observe that the system is now in states N_S.YELLOW_LIGHT and E_W.RED_LIGHT.