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PA Routes are also called Pennsylvania Traffic Routes, and formerly State Highway Routes. [2] There are 41,643 mi (67,018 km) of roadway maintained by state agencies, with 39,737 mi (63,951 km) maintained by PennDOT, 554 mi (892 km) maintained by the Pennsylvania Turnpike Commission, and 1,352 mi (2,176 km) maintained by other state agencies.
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.
Some signs can be localized, such as No Parking, and some are found only in state and local jurisdictions, as they are based on state or local laws, such as New York City's "Don't Block the Box" signs. These signs are in the R series of signs in the MUTCD and typically in the R series in most state supplements or state MUTCDs.
A PennDOT-issued sign at an auto garage in New Castle stating that it conducts vehicle inspections for cars registered in Pennsylvania. 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]
Traffic signs or road signs are signs erected at the side of or above roads to give instructions or provide information to road users. The earliest signs were simple wooden or stone milestones . Later, signs with directional arms were introduced, for example the fingerposts in the United Kingdom and their wooden counterparts in Saxony .
East of PA 51, the Yellow Belt becomes Lebanon Church Road and crosses Pennsylvania Route 885 in West Mifflin, Pennsylvania, connecting Clairton Boulevard (PA 51) with Pittsburgh-McKeesport Boulevard. The Allegheny County Airport is on the road. Both Curry Hollow Road and Lebanon Church Road are signed as SR 3048.
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Pennsylvania has a system of "color detour signs" in which any detour follows signs with a specific color. [ 29 ] [ 30 ] [ 31 ] The detours are meant to be used if a limited-access highway has to be closed for an emergency situation such as a flood or car accident , directing motorists along local roads near the limited-access highway to the ...