Colourblind_traffic_signal

Colourblind_traffic_signal

2

  1. How about using:

    • The octagonal Stop sign shape for the red  “Stop”
    • The triangular Yield sign shape for the yellow “Caution”
    • A “+” plus sign shape for the green “Go”

    That way two of the shapes are ones already in use, and the three shapes have maximum divergence.

    – Thomas

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