<a href="https://en.wikipedia.org/wiki/SEPTA" class="extiw" title="en:SEPTA">SEPTA's</a> <a href="https://en.wikipedia.org/wiki/Paoli/Thorndale_Line" class="extiw" title="en:Paoli/Thorndale Line">Paoli/Thorndale Line</a> (formerly "R5") westbound TR#1529 on Track 4 <small><i>(left)</i></small> and <a href="https://en.wikipedia.org/wiki/AMTRAK" class="extiw" title="en:AMTRAK">Amtrak's</a> <a href="https://en.wikipedia.org/wiki/Keystone_Service" class="extiw" title="en:Keystone Service"><i>"Keystone Service"</i></a> (New York-Philadelphia-Harrisburg) eastbound TR#666 on Track 2 <small><i>(right)</i></small> passing each other at the Rosemont Curve just east of the SEPTA regional rail station at <a href="https://en.wikipedia.org/wiki/Rosemont,_Pennsylvania" class="extiw" title="en:Rosemont, Pennsylvania">Rosemont, PA</a> (MP 10.9) on the four track Philadelphia to Pittsburgh <a href="https://en.wikipedia.org/wiki/Main_Line_(Pennsylvania_Railroad)" class="extiw" title="en:Main Line (Pennsylvania Railroad)">"Main Line"</a> grade of the  <a rel="nofollow" class="external text" href="http://www.fra.dot.gov/downloads/RRDev/key_vol_1.pdf">"Keystone Corrider"</a>. Built, owned, and operated for more than a century by the <a href="https://en.wikipedia.org/wiki/Pennsylvania_Railroad" class="extiw" title="en:Pennsylvania Railroad">Pennsylvania Railroad</a>, since April 1, 1976, the grade (including all stations) as far as <a href="https://en.wikipedia.org/wiki/Harrisburg" class="extiw" title="en:Harrisburg">Harrisburg</a> (MP 105.2) has been owned and operated by Amtrak over which SEPTA also has <a rel="nofollow" class="external text" href="http://www.fra.dot.gov/downloads/RRDev/key_vol_2a.pdf">operating rights</a> for its Philadelphia regional rail commuter service between Zoo Interlocking (MP 1.9) and Cork Interlocking (MP 68.1) although by agreement between SEPTA and <a href="https://en.wikipedia.org/wiki/PennDOT" class="extiw" title="en:PennDOT">PennDOT</a>, revenue service is prohibited west of Parkesburg (MP 44.2), the last station in Chester County. This portion of the grade was electrified by the <a href="https://en.wikipedia.org/wiki/Pennsylvania_Railroad" class="extiw" title="en:Pennsylvania Railroad">Pennsylvania Railroad</a> in 1915.
<a href="https://en.wikipedia.org/wiki/User:Centpacrr" class="extiw" title="wikipedia:User:Centpacrr">Centpacrr</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
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