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Pennsylvania's statewide 511 launched on September 1, 2009. The system provides up to date information on all the states interstate highways. [ 30 ] Travelers can also view road conditions and traffic cameras at 511PA.com .
A traffic camera is a video camera which observes vehicular traffic on a road. Typically, traffic cameras are put along major roads such as highways, freeways, expressways and arterial roads, and are connected by optical fibers buried alongside or under the road, with electricity provided either by mains power in urban areas, by solar panels or other alternative power sources which provide ...
The list of Interstate Highways in Pennsylvania encompasses 23 Interstate Highways—12 primary routes and 11 auxiliary routes—which exist entirely or partially in the U.S. state of Pennsylvania. In Pennsylvania, most of the Interstate Highways are maintained by the Pennsylvania Department of Transportation (PennDOT).
Since Pennsylvania first introduced numbered traffic routes in 1924, a keystone symbol shape has been used, in reference to Pennsylvania being the "Keystone State". The signs originally said "Penna" (a common abbreviation for Pennsylvania at the time), followed by the route number in block-style numbering in a keystone cutout.
The Pennsylvania Department of Transportation was created from the former Department of Highways by Act 120, approved by the legislature on May 6, 1970. [3] The intent of the legislation was to consolidate transportation-related functions formerly performed in the Departments of Commerce, Revenue, Community Affairs, Forests and Waters, Military ...
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Red light cameras are typically installed in protective metal boxes attached to poles [27] at intersections, [10] which are often specifically chosen due to high numbers of crashes and/or red-light-running violations. [26] In some case, cameras are built into traffic lights. Red light camera systems typically employ a sensor that detects the ...
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