“Why don't some couples go to the gym?
- Because some relationships don't work out.”
Traffic lightsIn 1914, a lighting ceremony was held for the first electric traffic lights used to control flow of different streams of traffic at the intersection of Euclid Ave. and E. 105th St. in Cleveland, Ohio. The traffic signals were red and green lights on street-corner poles, wired to a manually operated switch housed inside a control booth beside the road. The switch design prevented conflicting signals. A bell warned the drivers of colour changes. The installation by the American Traffic Signal Co. was modelled after a system patented by James Hoge (U.S. No. 1,251,666). The first traffic control light used a gas-lit lantern, in London, England (10 Dec 1868).« |
