How was traffic managed in major cities before mechanical control?
Answer
Police officers using hand signals
Before mechanical or electrical control became standard, managing traffic relied on police officers or crossing guards standing in the center of crossings, using hand signals to direct traffic.
#Videos
The Man Behind The Traffic Signal - YouTube
Related Questions
How was traffic managed in major cities before mechanical control?When was the first true electrical traffic signal system installed in the United States?What critical component did the 1914 two-color electric signal system typically lack?What key insight did Garrett Morgan introduce to improve existing traffic signal technology?In what year did Garrett Morgan apply for a patent for his improved traffic signal device?What was the physical form of the device Morgan patented in 1923?What was the revolutionary function of the universal warning signal in Morgan's three-position device?Which major corporation acquired the rights to Garrett Morgan's traffic signal technology?For what substantial sum did Morgan sell the rights to his traffic signal technology?What foundational principle of modern traffic control is attributed to Morgan's 1923 patent?Besides traffic control, for what type of safety innovation was Garrett Morgan already known?