Well, with our Lectron set, we can build an easy yet working principle of traffic lights like the ones used in my country. The circuit is build around a 3 stage multivibrator. By choosing the appropriate values of the capacitors, we can reach the correct timings. In my circuit the timing is relatively short and only for demonstration.
    The leds for the crossing roads should be inversed by using inverters.

    Here is picture

    Many greetings

    • This reply was modified 3 years, 10 months ago by Michael. Reason: Changed font and size styling for easier reading