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Traffic Lights (Intersection)

Traffic Light Circuit for a 4-Way-Intersection disguised as a
billboard.

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To open/reveal the circuit activate the lever at the bottom right and the case will slide upwards with flashing warning lights to reveal the
circuit.

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Traffic lights:

- Straight (x4; the opposing ones are always triggered at the same time)
- Turn right (yellow and green; triggered together with crossing traffic)
- Turn left (x4; opposing ones triggered at the same time)
- Pedestrian crossing (red + green)

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| Standard procedure in this Blueprint |
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After setting up/welding the circuit activate the lever in the bottom left (ievery single flip flop will blink rapidly). After every timer and flip flop is reset deactivate it and short-press the button right above it. This will activate the startup-procedure and
activate the
circuit.

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After button-press:
- Red light at Side A + C (opposing) are triggered
- 5s into red light phase go straight of B + D turn yellow
- 1.5s yellow phase, then green phase for 20s (A + C get turn-right)
- B + D turn yellow for 1.5s, then red
- 5s into red light phase of B + D turn left for A + C turn yellow
- 1.5s in yellow phase turn left goes green
or 20s
- turn left goes yellow for 1.5s, turn left turns red
- 5s in red phase turn left for B + D turn yellow for 1.5s
- turn left for B + D turn green for 20s
- turn left turns yellow for 1.5s
- all road lights turn red
- after 7s pedestrian crossings will turn green
- after 15s green pedestrian crossing will
turn red
- yellow phase for A + C is triggered for 1.5s
- green phase for A + C for 20s
- yellow phase for A + C for 1.5s
- Now the lights are completely initialized and will repeat this cycle until switched off via lever in bottom left

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You can edit all times at your own risk.
Timers:

-Black timers (right side): should not be
edited. Longer time makes them flash slower, shorter time makes them flash faster (too fast makes them go all wild). Used for flashing warning lights.
-Dark red timer: Waiting time after pedestrian crossing turned red (standard: 2s)
-Dark green timer: Green phase for pedestrian crossing (standard: 15s)
-Light red: Red light waiting time (standard 5s)
-Yellow: Yellow phase (standard 1.5s)
-Light green: Green phase (standard
20s)

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You can close the case via the lever on the case. It will slide down again with flashing warning
lights.

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