Jun 29 2011 09:42 pm
Posted by ashleigh.baker under Uncategorized
New Technology of the 1920’s
With the recent invention of automobiles, city streets became chaotic and dangerous. There was a mixture of pedestrians, buggies and cars and a need for order. In about 1920, Detroit police officer William Potts invented an overhanging four-way, red, green, and yellow light system. The traffic light brought order to the chaotic city and also set the trend for inventing ways to modernize the city. 