Connected and Automated Vehicle Projects
District 4 | District 11 | District 12
District 4 CAV Test Bed
Route: SR 82 (El Camino Real) in Santa Clara County
Pilot Length: 7 miles
Equipment:
- 16 Dedicated Short-Range Communications (DSRC) Roadside Units (RSUs) [Project underway to upgrade the DSRC RU with C-V2X RSUs]
- 15 C-V2X RSUs
The Test Bed runs along El Camino Real in Palo Alto. It consists of 31 consecutive intersections between Medical Foundation Drive in Palo Alto and Grant Road in Mountain View. The Test Bed exchanges live data with a Caltrans 2070 traffic controller at each intersection to populate the Signal Phase and Timing (SPaT) messages and commanding adaptive signal and priority timing. Traffic signals are operated and maintained by Caltrans District 4. The Test Bed is maintained and managed by the California Partners for Advanced Transportation Technology (PATH) program.
Additional information is available at the UC Berkeley CAV Test Bed website.
Developed, Tested and Deployed CAV Services (Deployed = D, Tested = T):
| CAV Services | Deployed | Tested |
| MMITSS | X | |
| Communication based actuation for pedestrians, bicyclists, and vehicles | X | |
| SAE J2735-201 603 message library | X | |
| Intersection geometry map | X | |
| SPaT | X | |
| Signal status message (SSM) | X |
|
| Basic safety message (BSM) | X | |
| Signal request message (SRM) | X |
|
| RTCM corrections message | X | |
| Eco-approach and departure (EAD) | X | |
| Red light violation warning | X |
CAV Services Under Development:
- Cloud and V2X hybrid transit signal priority (TSP)
- Transit EAD application integrated with TSP
- Bike signal priority
- Traffic signal controller with dual processors for V2X deployment
- Reduced speed zone/lane closure warning
- Signalized pedestrian crosswalk alert
- Mid-block pedestrian crosswalk alert
- Pedestrian crosswalk alert near HAWK (High-Intensity Activated Crosswalk) signals
- Advanced work zone priority
District 11 CAV Projects
Routes: Route 5, 8, and 15 in San Diego County
Pilot Length: Varies
Equipment: 23 RSUs along Route 15 and two each at Routes 5 and 8
Twenty-three RSUs have been deployed along the 20-mile-long corridor on Route I-15. RSUs will broadcast SPaT services to any vehicle equipped with an on-board unit (OBU) and will receive BSMs transmitted by OBUs. Additional CAV use cases will be deployed to test out the vehicle-to-infrastructure safety and mobility applications.
CAV Services to be Deployed:
- Expanded CMS
- Queue warning
- Upcoming work zone warnings
- SPaT
- BSMs
- Wrong way driving
Bus on Shoulder Pilot Project
The project is a partnership with the San Diego Association of Governments, California Department of Transportation District 11, San Diego Metropolitan Transit System, California Highway Patrol, Federal Transit Administration, and the U.S. Department of Transportation Federal Highway Administration.
On Route 805 at eight ramp meter locations, RSUs have been installed. OBUs installed on 15 MTS buses provide audio and visual alerts to the bus operators as the bus approaches a metered on-ramp. The OBU communicates with an RSU connected to the ramp meter's controller providing timing information and stopping the traffic at on-ramps thus making transit priority as the bus approaches the metered on-ramp along the right shoulder of the mainline.
Connected Vehicle Enabled Intersection Pilot Project
The RSU mounted to the luminaire mast arm of the traffic signal standard at the EB on-ramp to Route 8 will collect BSMs while providing SPaT messages to vehicles equipped with OBUs. The BSM will be stored in the roadside equipment in the traffic signal controller cabinet.
District 12 CAV Projects
Routes: Routes 5, 22, 55, 57, 91 and 405 and at Caltrans ramp intersections along Routes 5, 57, and 91 in Orange County
Pilot Length: Varies
Equipment: RSUs and RSE along mainline Routes 5, 22, 55, 57, 91 and 405 and at ramp intersections along Routes 5, 57, and 91
The District 12 CAV Project will also be integrated with the Triangle Integrated Corridor Management (ICM) project and will be used as part of the proposed ICM strategies in response to major incidents.
Freeway Connected Vehicle Component
The purpose is to enhance the operations of the freeways in Orange County. It is envisioned that information captured from connected vehicles will improve the TMC's situational awareness and provide travelers with real time traffic conditions and safety alerts.
Arterial Connected Vehicle Component
There are several congested intersections in the ICM project area. The connected vehicle infrastructure will improve the safety of pedestrians and the mobility of public and emergency vehicles. On-ramps and off-ramps will be managed better when connected vehicles can be targeted for route diversion.
Planned CAV Services to be Deployed along Freeways:
- Traveler information messages (TIM)
- Event and work zone warning
- End of Queue warning
- Wrong way driver warning
Planned CAV Services to be Deployed along Intersections:
- Red light violation warning
- Reduced speed/work zone warning
- Pedestrians and bicycles in signalized x-walk warning
- Transit signal priority
- TIM