Willis Lamm's
Traffic Signal Collection

  Darley Simplex C-811
"Three bulb" 4-way signal

Part Three

Early Darley Sequences
Back when the Darley C-811 signal was made, yellow indications were primarily just used to caution motorists that the signal was about to change. One common sequence was for the yellow lights to come on for a couple of seconds, then go out, then the light would change.

View a video of the display sequence

Darley also produced what was sometimes called the stairstep sequence which can be viewed when you visit the D-480 page.

Continue to the Darley D-131 4-Way Beacon

Return to Part Two

Return to Darley C-810

Return to Darley Page

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