The Pennsylvania Transportation Institute  
   Multidisciplinary research institute that conducts innovative and relevant research directed toward current and future transportation needs.
   http://www.pti.psu.edu/

The American Society of Transportation & Logistics  
   Professional organization founded in 1946 by a group of industry leaders to insure a high level of professionalism and promote continuing education in the field of transportation and logistics.
   http://www.astl.org/

Coalition for Alternative Transportation  
   Dedicated to curbing reliance on the automobile.
   http://www.car-free.org/

Transportation Engineering and Safety Conference  
   Design Tools: Accredited programs for design professionals and anyone interested in the design and use of everyday space in Pennsylvania.
   http://www.cde.psu.edu/C&I/PTI/

PennDOT Electronic Bidding System  
   Information for contractors on road construction proposals. Includes notice to contractors, bid schedule of prices and addenda, proposal text and real-time bid letting results.
   http://www.dot.state.pa.us/cms/ebs/index.htm

PA DMV  
   General information of the department of motor vehicles. Site is not affiliated with the Commonwealth of Pennsylvania Department of Motor Vehicles.
   http://www.padmv.org/

Fort Pitt Bridge and Tunnel Construction Project  
   Provides detailed traffic, detour and construction information for Pittsburgh visitors and commuters who use the Parkway West and Interstate 79 North.
   http://www.epenndot.com/

Save Our Transit  
   Grassroots organization lobbying to get more money for public transportation into the Governor's budget. Learn about fare hikes, initiatives, and view photos.
   http://www.geocities.com/saveourtransit/

Pennsylvania Rails to Trails  
   Interactive maps allow for easy location of trails; also a searchable database of active and defunct rail lines.
   http://www.dcnr.state.pa.us/rails/

Route 21 Corridor Improvement Project  
   A highway project for rebuilding Traffic Route 21 (S.R. 0021) between Waynesburg and Uniontown. Includes progress reports, maps and photographs.
   http://rebuild21.com/

Hawk Logistics  
   Nationwide transporter specializing in the transportation and disposal of all types of hazardous and residual wastes.
   http://www.hawklogistics.com/

Maryland and Pennsylvania Railroad Preservation Society  
   Aims to preserve the heritage of the renowned and historic "Ma & Pa Railroad".
   http://www.maandparailroad.com