- AGA Consulting
- Benshoof & Assoc Inc
- Carolina Traffic Co
- Civil Group
- Conley Associates Inc
- Crawford Bunte Brammeier
- DJK & Assoc Inc
- DKS Assoc
- Gary Deans & Assoc
- Gibson Engineers
- Greenman-Pedersen
- Hajec Associates
- Harwick Transportation Group
- HAYES Seay Mattern & Mattern
- Highway & Traffic Signal Dsgn
- Image Sensing Systems Inc
- Iteris & Meyer Mohaddes Assoc
- J S Pechulis Land Dev Svc Inc
- Jacobs Civil Inc
- Kubilins Transportation Group
- Martin/Alexiou/Bryson
- Meyer Mohaddes Assoc
- Murphy Hastings Assoc
- Orth-Rodgers & Assoc
- Parsons Brinckerhoff Quade
- Ramey Kemp & Assoc Inc
- Reid Cool & Michalski
- Robert L Martin Aicp
- Solaegui Engineers
- Superior Engineer Svc
- TEPP
- Terry Brown
- Traff-Pro
- Traffic Data Collection
- Traffic Solutions
- Transystems Corp
- Vanasse Hangen Brustlin Inc
- Vedi Associates Inc
- Vincent R Terrill Sr
- Walker Parking Consultants
