The following are the roles and responsibilities, by functional area or by project, for Hawaii Department of Transportation, Highways Division, Kauai District.
  | Functional Area or Project | Roles and Responsibilities | Status | 
| Hanalei Flood Warning System
 Roles and Responsibilities | Provide incident information to travelers via traffic information devices on state roads. | Existing | 
| HDOT- HWY-K Fixed Dynamic Message Signs (DMS) Roles and Responsibilities | Provide traffic information to travelers via HDOT DMS equipment. | Existing | 
| HDOT-AIR-K Airport Secondary Entrance
 Roles and Responsibilities | Provide traffic information to travelers via HDOT DMS equipment. | Existing | 
| Obtain traffic images and traffic flow data through CCTVs and field sensors and maintain operational control of its own field equipment. | Planned | 
| Coordinate traffic information and traffic control with Kauai County Department of Public Works. | Planned | 
| Operate traffic signal systems for State owned intersections. | Existing | 
| HDOT-HAR-K Emergency and Traffic Coordination
 Roles and Responsibilities | Send traffic/incident information and traffic images to 911 Center, Kauai Fire and the Kauai EOC. | Planned | 
| Coordinate incident and threat information with the Kauai EOC. | Existing | 
| HDOT-HWY-K Closed Circuit Television (CCTV) Roles and Responsibilities | Obtain traffic images and traffic flow data through CCTVs and field sensors and maintain operational control of its own field equipment. | Planned | 
| HDOT-HWY-K Portable Dynamic Message Sign (DMS) Upgrade Roles and Responsibilities | Provide traffic information to travelers via HDOT DMS equipment. | Existing | 
| HDOT-HWY-K Traffic Control Center (TCC)
 Roles and Responsibilities | Operate changeable speed limit signs, including collecting traffic count information from the devices. | Planned | 
| Provide traffic information to travelers via HDOT DMS equipment. | Existing | 
| Obtain traffic images and traffic flow data through CCTVs and field sensors and maintain operational control of its own field equipment. | Planned | 
| Operate traffic signal systems for State owned intersections. | Existing | 
| Send traffic/incident information and traffic images to 911 Center, Kauai Fire and the Kauai EOC. | Planned | 
| Provide incident information to travelers via traffic information devices on state roads. | Existing | 
| HDOT-HWY-K Traffic Signal Upgrade Roles and Responsibilities | Operate traffic signal systems for State owned intersections. | Existing | 
| Kauai Bus Transit Signal Priority (TSP)
 Roles and Responsibilities | Provide signal priority when requested for Kauai County Transit vehicles | Planned | 
| Kauai DPW Closed Circuit Television (CCTV)
 
 Roles and Responsibilities | Obtain traffic images and traffic flow data through CCTVs and field sensors and maintain operational control of its own field equipment. | Planned | 
| Kauai DPW Fixed Dynamic Message Signs (DMS)
 Roles and Responsibilities | Operate changeable speed limit signs, including collecting traffic count information from the devices. | Planned | 
| Kauai DPW Temporary Speed Signs
 Roles and Responsibilities | Operate changeable speed limit signs, including collecting traffic count information from the devices. | Planned | 
| Kauai Emergency Management | Provide emergency signal preemption for Kauai Fire and EMS vehicles. | Existing | 
| Coordinate incident and threat information with the State EOC. | Existing | 
| Coordinate emergency plans, evacuation and reentry plans, and disaster management plans with the Kauai EOC (e.g. Web EOC). | Existing | 
| Coordinate incident and threat information with the Kauai EOC. | Existing | 
| Kauai Incident Management | Send traffic/incident information and traffic images to 911 Center, Kauai Fire and the Kauai EOC. | Planned | 
| Perform network surveillance for detection and verification of incidents on state roads. | Planned | 
| Coordinate maintenance resources for incident response with county maintenance and construction systems. | Existing | 
| Provide incident information to travelers via traffic information devices on state roads. | Existing | 
| Kauai Information Dissemination | Coordinate with the Kauai's Visitor's Bureau to notify visitors of significant weather alerts, such as tsunami or hurricane warnings. | Existing | 
| Provide traffic information to travelers via HDOT DMS equipment. | Existing | 
| Kauai Maintenance Management | Perform maintenance on roadway equipment, including traffic signals. | Existing | 
| Monitor HDOT-HWY-K Maintenance Vehicles for safety and security. | Existing | 
| Kauai Traffic Signal Control | Provide signal priority when requested for Kauai County Transit vehicles | Planned | 
| Operate changeable speed limit signs, including collecting traffic count information from the devices. | Planned | 
| Obtain traffic images and traffic flow data through CCTVs and field sensors and maintain operational control of its own field equipment. | Planned | 
| Coordinate traffic information and traffic control with Kauai County Department of Public Works. | Planned | 
| Provide emergency signal preemption for Kauai Fire and EMS vehicles. | Existing | 
| Operate traffic signal systems for State owned intersections. | Existing |