- Accurate Counts
- Alliance Texas Engineering Co
- American Traffic Control
- Bellomo-Mc Gee Inc
- C J Hensch & Assoc Inc
- Carl Walker Engineers Inc
- Community Alliance For Traffic
- Community Alliance For Traffic
- Consolidated Traffic Control
- Dial Inc
- Dm Jm & Harris
- Gibson Traffic Consultants Inc
- Gram Traffic Counting
- I-35 Project Hotline
- Interstate Barricades & Mrkngs
- ISI Traffic Safety Svc
- J Copeland Enterprises
- J Copeland Enterprises
- J Copeland Enterprises
- Mc Gann Associates Inc
- Metrocount
- Metrocount
- Metrocount
- Parking Network Inc
- Pro Markings
- Quality Counts
- Resource Systems Group
- Robert J Halls & Assoc
- Traffic Control Unlimited
- Traffic Directions
- Trafficland Inc
