Invention
Traffic light
J. P. Knight
Signalling device to control competing flows of traffic
ByJ. P. Knight
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🇮🇹A red traffic light stands by an old building.Image
🇦🇹a city street with a traffic light and a street signImage
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🇺🇸TrafficImage
🇫🇷a busy city street filled with lots of trafficImage
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🇮🇹a street filled with lots of traffic next to tall buildingsImage
🇦🇹a street sign in front of a buildingImage
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🇺🇸a road with cars on it by a body of water with a city in the backgroundImageWorld tour
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🇪🇪A red sculpture on the side of a roadImage
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🇦🇹red and white tram on road during daytimeImage
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🇺🇸road with vehicles near buildingsImage
🇪🇪an orange car parked on the side of the roadImage
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🇩🇪white and black street signImage
🇺🇸a street with cars and trees by a body of waterImage
🇺🇸yellow car running on the street between the building during daytimeImage
🇺🇸yellow vehicle near buildingImage
🇬🇧a red double decker bus driving down a busy streetImage
🇪🇪a cobblestone street with cars parked on both sidesImage