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Open Speed Limit Database
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In 2005 an effort was begun to aid motorists with a database of Speed Limit Signs. Specifically, the location of signs using GPS technology. These data could be used for a number of purposes such as: Cruise Controls: Speed limit signs can be used in Cruise controls. Research: Under reported speed limit signs have been deemed speed-traps. A database of signs helps researchers pinpoint areas of underreporting. Court proceedings: The location of signs is useful in identifying widely varying speeds in troublesome areas. People fighting traffic tickets may use this information. == More information http://www.osldb.org == What is it exactly? The osldb is the speed limit (kmh or mph), direction, and time of day (for school zones). It also includes the author or contributor although many donate information anonymously. Also the latitude, longitude of the speed limit signs position. It may in the future include other things such as stop signs and yellow warning signs. Why a new database? Many databases exist, such as real estate on google maps, roads on TeleAtlas. Some governments are starting speed limit databases . The question arises as to whether governments or wiki-based systems would do a better job of maintaining a speed limit database. At present the osldb is in wiki form so that the public can own this information, although anyone including government officials can add information, and anyone can download the database. Current State. The osldb currently has 10,000 speed limit signs in the US, Finland and Germany. Anyone can contribute to these. It is estimated that the US alone has 10 million speed limit signs. Who is involved. OSLDB was created by James Pruett. It was the offshoot of a cruise control project by guys who by day worked at Sanmina in Huntsville AL and by night were motorcyclists and tinkers. ---- 
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