Pedestrian traffic control unit

The relay-logic controller represents the most advanced state of automatic traffic control devices used in NSW prior to the introduction (in 1973-74) of the world's first microprocessor based traffic controllers. The first signalling devices to …
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Pedestrian traffic control unit

The relay-logic controller represents the most advanced state of automatic traffic control devices used in NSW prior to the introduction (in 1973-74) of the world's first microprocessor based traffic controllers. The first signalling devices to …
View more