- AARoads-Pittsburgh Gateway - Andy Field/Alex Nitzman
- Allegheny County Police
- American Society of Highway Engineers-Pittsburgh Section
- American Society of Highway Engineers-Southwestern Pennsylvania Chapter
- Association for Bridge Construction & Design-Pittsburgh Chapter
- Bridges and Tunnels of Allegheny County, PA - Bruce Cridlebaugh
- City of Pittsburgh
- City of Pittsburgh Department of Public Works
- CommuteInfo
- County of Allegheny
- County of Allegheny Department of Public Works
- Driving in the 'Burgh - Greg Podnar
- Greater Pittsburgh Convention and Visitors Bureau
- 1951 Pittsburgh Driving Rules - Adam Prince/Jim Ellwanger
- Oakland Transportation Management Association
- ParkPGH - The Pittsburgh Cultural Trust
- Pennsylvania Department of Transportation (PennDOT) District 11
- Pennsylvania Truck Information
- Pennsylvania Turnpike Commission
- Pittsburgh Bureau of Police
- Pittsburgh Department of Public Works Sign Gallery - Adam Prince
- Pittsburgh Post-Gazette-Transportation - Jon Schmitz
- Pittsburgh Traffic Report - Here.com
- Pittsburgh Wayfinder System - Bruce Cridlebaugh
- Road Damage Assessment System (RODAS) Project - Carnegie Mellon University
- SWPA Roads Project - Adam Prince