A traffic light, traffic signal, or stop light is a signalling device positioned at a road intersection, pedestrian crossing, or other location in order to indicate when it is safe to drive, ride, or walk using a universal color code.
Introduction
Traffic lights for normal vehicles or pedestrians always have two main lights, a red light that means stop and a green (or sometimes white for pedestrians) light that means go. Usually, the red light contains some orange in its hue, and the green light contains some blue, to provide some support for people with red-green color blindness. In most countries there is also a yellow (or amber) light, which when on by itself and not flashing means stop if able to do so safely. In some systems, a flashing amber means that a motorist may go ahead with care if the road is clear, giving way to pedestrians and to other road vehicles that may have priority. A flashing red essentially means the same as a regular stop sign. There may be additional lights (usually a green arrow or "filter") to authorize turns. A turn light preceding the opposing through movement is called a leading left turn in the U.S., because it leads the opposing through green light (likewise, in the U.S., a left turn arrow that follows the opposing through movement is known as a "lagging left turn").
Expensive Gas, Dangerous Roads William Pentland Fri, 22 Aug 2008 10:00:00 -0000 Is new motorcycle crash data telling us something about highway safety? Japan Digs Into Iron Ore Ruthie Ackerman Fri, 22 Aug 2008 20:20:00 -0000 Steelmakers in Japan are taking control of suppliers to solve the problem of higher raw material costs. Severstal Capitalizes On Weak Dollar Ruthie Ackerman Fri, 22 Aug 2008 22:50:00 -0000 Russia's largest steelmaker tries to cut costs by buying American coal miner PBS Coals.
BBC News | Business | World Edition
World poverty 'more widespread' Wed, 27 Aug 2008 08:40:44 -0000 The World Bank says there are more poor people in the world than previously thought, with one in four in poverty. Rise in US durable goods orders Wed, 27 Aug 2008 13:37:21 -0000 New orders for long-lasting US manufactured goods rise by a surprise 1.4% in July, led by a big rise in aircraft sales. Oil price rises on hurricane fear Wed, 27 Aug 2008 19:22:07 -0000 The price of oil climbs as Tropical Storm Gustav heads towards the Gulf of Mexico - home to many offshore energy installations.
NYT > World Business
As Food Prices Soar, Brazil and Argentina React in Opposite Ways Wed, 27 Aug 2008 19:42:08 -0000 In Brazil, the government is encouraging farmers to produce more for export while prices are high. But Argentina is focused on encouraging farmers to sell more at home.
U.S. Moves Toward International Accounting Rules Wed, 27 Aug 2008 23:16:19 -0000 The S.E.C. moved to require all American companies to use international accounting standards by 2016.
Data Points to Downturn in Germany, With a Ripple Effect Feared Wed, 27 Aug 2008 14:51:47 -0000 The odds of a mild recession in Germany rose significantly Tuesday, as data showed the outlook for business had plunged to its lowest level since a downturn in 1993.
washingtonpost.com -
Durable goods post strong gains in June, July AP Wed, 27 Aug 2008 18:37:05 -0400 WASHINGTON -- U.S. factories saw a surprisingly hefty increase in their orders for big-ticket products in July, reflecting continued strength in export sales and a boost to business investment from the government's tax stimulus package. Consumers picked to test hydrogen car prototypes AP Wed, 27 Aug 2008 17:23:00 -0400 WASHINGTON -- Tom Albert drove his loaner Chevrolet Equinox like any other car. Iraq's holy city of Najaf witnessing a boom AP Wed, 27 Aug 2008 15:03:07 -0400 NAJAF, Iraq -- The city's first airport is weeks away from opening, but already a bigger one is talked about. Land prices are soaring. Merchants say they don't remember business ever being so good. Chrysler weighs strategic options for Dodge Viper AP Wed, 27 Aug 2008 13:08:57 -0400 NEW YORK -- Chrysler LLC said Wednesday it is weighing options for its iconic Dodge Viper sports car, which could include a sale of the nameplate. Chrysler looking at options for Viper business Reuters Wed, 27 Aug 2008 10:37:59 -0400 DETROIT (Reuters) - Chrysler LLC is exploring strategic options for its Dodge Viper sports car business as the struggling U.S. automaker tries to raise cash to ride out a deepening U.S. auto downturn. FAA says communication breakdown delayed flights AP Tue, 26 Aug 2008 23:18:21 -0400 ATLANTA -- An electronic communication failure Tuesday at a Federal Aviation Administration facility that processes flight plans for the eastern half of the U.S. caused mass delays around the country. The Northeast was hardest hit.
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IST International, Ltd. - Manufactures intelligent signaling systems.
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Pelco Products, Inc. - Manufacturer of traffic signaling hardware.
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Precision Solar Controls, Inc. - Manufactures traffic monitors, signal lamps, and solar powered changeable message signs.