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Theory

The design specifications of the traffic light controller are:

Specifications above were converted into the state transition diagram (Figure 0.1), with the description of each state in Table 0.1. t30 and t5 mean expiration of 30 and 5-seconds time periods, respectively. Also fr stands for a car is sensed on the farm-road.

  
Figure: State Transition Diagram of the Traffic Controller

  
Table: Description of the States



Hitoshi Oi
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