First Electric Traffic Light Is Installed (1914)
Prior to 1914, there had been several attempts to create automobile traffic signals similar to those used by railroads, but it was only after a four-way electric signal was installed in Cleveland, Ohio, that the modern traffic light system began to take root. The signal had only two colors, green and red, but the three-color version still in use today was not far off. Besides railroad signals, what earlier application of red and green might have led to the use of these colors in traffic lights? Discuss
Tags: automobile, automobile traffic, electric signal, railroad signals, root, system, traffic light system —
Related ads First Electric Traffic Light Is Installed (1914)
Nora Roberts
Be yourself. Be true to that, to your heart. Patience. See what happens if you step back instead of bounding forward. Nora Roberts
Seneca
Injustice never rules forever. Seneca
Carl Lotus Becker
“My own mind is my own church.” Carl Lotus Becker quotes
Thought for the day-Self destruct
“There will be a time when loud-mouthed, incompetent people seem to be getting the best of you. When that happens, you only have to be patient and wait for them to self destruct. It never fails.”- Richard Rybolt
bluestocking
bluestocking : DEFINITION: (noun) A woman having literary or intellectual interests. SYNONYMS: bas bleu. USAGE: Calling me names like bluestocking or nerd will only strengthen my resolve to learn. Discuss