3.5 SPaT Challenge - Intersection Approach Countdown - KCMO
Description
Signal Phase and Timing (SPaT) data is supported in the connected vehicle environment through the deployment of roadside equiipment and onboard equipment in the vehicle to exchange signal timing data. The Eco-Approach and Departure at Signalized Intersections service package, upon which this project is based, uses wireless data communications sent from a connected vehicle roadside equipment (RSE) unit to connected vehicles to encourage "green" approaches to and departures from signalized intersections. The vehicle collects intersection geometry information and signal phase movement information using V2I communications and data from nearby vehicles using V2V communications. Upon receiving this information, the service performs calculations to provide speed advice to the driver, allowing the driver to adapt the vehicle's speed to pass the next traffic signal on green or to decelerate to a stop in the most eco-friendly manner. The service package also considers a vehicle's acceleration as it departs from a signalized intersection. In basic applications, this service provides a countdown to the signal change from green to yellow or red to green allowing the driver to adjust their vehicle speed to approach and depart the intersection in an optimal manner. The SPaT challenge is organized by the National Operations Center of Excellence to encourage DSRC device deployment in all states. This particular service is not the only one supported with this technology implementation so more applications can be added in the future using the same RSE and OBE implementations.
Status
Future
Timeframe
Mid Term
Stakeholders
| City of Kansas City, MO |
| Connected Vehicle Stakeholder |
| Travelers |
Inventory
| Connected Vehicle Roadside Equipment |
| Driver |
| KCMO ATMS |
| KCMO ATMS Field Equipment |
| Vehicle |
Services
| ST08-Eco-Approach and Departure at Signalized Intersections (KCMO) |
Interfaces
| Source | Flow | Destination | Status |
|---|
| Connected Vehicle Roadside Equipment | intersection management application status | KCMO ATMS | Future |
| Connected Vehicle Roadside Equipment | intersection status | Vehicle | Future |
| Connected Vehicle Roadside Equipment | intersection status monitoring | KCMO ATMS Field Equipment | Future |
| Driver | driver input | Vehicle | Planned |
| KCMO ATMS | intersection management application info | Connected Vehicle Roadside Equipment | Future |
| KCMO ATMS | signal control commands | KCMO ATMS Field Equipment | Existing |
| KCMO ATMS | signal control device configuration | KCMO ATMS Field Equipment | Existing |
| KCMO ATMS | signal control plans | KCMO ATMS Field Equipment | Existing |
| KCMO ATMS | signal system configuration | KCMO ATMS Field Equipment | Existing |
| KCMO ATMS Field Equipment | conflict monitor status | Connected Vehicle Roadside Equipment | Future |
| KCMO ATMS Field Equipment | driver information | Driver | Existing |
| KCMO ATMS Field Equipment | intersection control status | Connected Vehicle Roadside Equipment | Future |
| KCMO ATMS Field Equipment | signal control status | KCMO ATMS | Existing |
| Vehicle | driver updates | Driver | Planned |
| Vehicle | vehicle location and motion for surveillance | Connected Vehicle Roadside Equipment | Future |