http://tags.library.upenn.edu/tag/philadelphia+delaware_valley PennTags Feed http://tags.library.upenn.edu/makerecord/url/2273 http://tags.library.upenn.edu/makerecord/url/2273 DVRPC provides traffic counts for Philadelphia from 1974-present at over 2,000 locations.<br /> http://tags.library.upenn.edu/makerecord/url/2272 http://tags.library.upenn.edu/makerecord/url/2272 The Delaware Valley Regional Planning Commission section on transportation planning. Includes lots of information about transportation plans and planning in the region.<br />