Map Information:

Map Title:
Accessibility For Locations Derived From Google Transit Feeds
Name(s) of Author(s):
Drashti Joshi/Wolfgang Scherr (Glenn McNichol)
Delaware Valley Regional Planning Commission
Email Address:
Software Used to Make Map:
ArcGis 9.3.1
Data Sources:

Parcels; TIGER and TeleAtlas Roads; NJEMS Sites; 2002 and 2007 Digital Imagery; Counties/Municipalities; EXCEL files; GPS files; Harcopy Maps

Map Description:

The map is composed of four individual maps:

  • Travel Time from Philadelphia, PA (Metropolitan Center)
  • Travel Time from West Chester, PA (Suburban County Seat)
  • Travel Time from Trenton, NJ (Metropolitan Subcenter)
  • Travel Time from Doylestown, PA (Suburban County Seat)
Accessibility by transit depends strongly on location. Center locations like Center City Philadelphia provide best accessibility. Subcenters such as Trenton are also well connected, while the state border affects connectivity across the Delaware river. Transit accessibility from suburban towns is typically best along corridors with direction to the center.

Google transit feeds in GTFS format are provided by SEPTA, NJ Transit, PATCO, Amtrak. DVRPC combines the GTFS schedule data with street networks from the member counties and from the OpenStreetMap in a regional travel model, which uses the VISUM software.

The isochrones in this map are travel time contours. They have been computed by VISUM using all transit services that depart between 9:00 and 9:30 AM from the start location, following the shortest path through the entire network. From the final stop, egress walk contours are computed assuming a speed of 3.0 MPH.