Data Presentation, Design, Engineering, Perceived Value, Pragmatism, Travel, Visualization, history, transportation
Marshalite Alternative Traffic Light
03 Sep 2008 by David Goligorsky
Charles Marshall designed this alternative traffic light in 1936 and it was put to use in Australia from the 1940’s through the 1970’s. The benefit of knowing the signal phase timing is apparent, but so is the abuse of such a device. Besides the ambiguity of timing for red, yellow, and green that is solved by the traditional Boolean lights that we are familiar with, there’s also the inability to adjust the signal phase timing if road work or new traffic patterns require changes. (via Information Aesthetics)
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