This stakeholder group is the local Caltrans districts. These four districts cover six of the Southern California counties (Los Angeles, Orange, Ventura, San Bernardino, Riverside, and Imperial).
| Caltrans District 11 |
| Caltrans District 12 |
| Caltrans District 7 |
| Caltrans District 8 |
| Caltrans Regional TMCs |
| PeMS |
| Roadway/Railroad Inspection Facilities |
| Caltrans TMC Roadside Equipment |
| Video Surveillance Clearing House |
| Excise Summary Terminal Activity Reporting System (ExSTARS) |