Wichita TOC Roadside Equipment

Interconnects - Flows - Entities - Services - Functional Requirements

Definition:

Roadside Equipment includes any and all equipment distributed on and along the roadway which monitors and controls traffic. This can include equipment for ramp metering ,roadway treatment systems and environmental sensors.

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Systems Interconnected
with the Wichita TOC Roadside Equipment

SCADA Wayside Equipment (Railroad Gates) Wichita Fire Vehicles Wichita Traffic Operations Center

Interconnect Diagram

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Architecture Flow Diagrams
which include Wichita TOC Roadside Equipment:

• Wichita TOC Roadside Equipment SCADA
• Wichita TOC Roadside Equipment Wayside Equipment (Railroad Gates)
• Wichita TOC Roadside Equipment Wichita Fire Vehicles
• Wichita TOC Roadside Equipment Wichita Traffic Operations Center

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Architecture Flows
to/from the Wichita TOC Roadside Equipment:

Wichita TOC Roadside EquipmentWayside Equipment (Railroad Gates)

• intersection blockage notification

Wichita TOC Roadside EquipmentWichita Traffic Operations Center

• hri status


• roadway information system status


• signal control status


• traffic flow


• traffic images

SCADAWichita TOC Roadside Equipment

• flood control and monitoring information

Wayside Equipment (Railroad Gates)Wichita TOC Roadside Equipment

• arriving train information


• track status

Wichita Fire VehiclesWichita TOC Roadside Equipment

• local signal preemption request

Wichita Traffic Operations CenterWichita TOC Roadside Equipment

• hri control data


• hri request


• roadway information system data


• signal control data


• traffic sensor control


• video surveillance control

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National ITS Architecture Subsystems
mapped to the Wichita TOC Roadside Equipment:

• Roadway Subsystem

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National ITS Architecture Services
associated with Wichita TOC Roadside Equipment:

• ATMS01 - City of Wichita Network Surveillance -- (Graphic)
• ATMS03 - City of Wichita Surface Street Control -- (Graphic)

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National ITS Architecture Functional Requirements
associated with Wichita TOC Roadside Equipment:

1. The field element shall collect, process, digitize, and send traffic sensor data (speed, volume, and occupancy) to the center for further analysis and storage, under center control.
2. The field element shall collect, process, and send traffic images to the center for further analysis and distribution.
3. The field element shall return sensor and CCTV system operational status to the controlling center.
4. The field element shall return sensor and CCTV system fault data to the controlling center for repair.
5. The field element shall collect, digitize, and send pedestrian sensor data to the center for further analysis and storage.

1. The field element shall control traffic signals at intersections and on main highways for urban and rural areas, under center control.
2. The field element shall collect pedestrian images and pedestrian sensor data, and respond to pedestrian crossing requests via display, audio signal, or other manner.
3. The field element shall monitor operation of traffic signal controllers and report to the center any instances in which the indicator response does not match that expected from the indicator control information.
4. The field element shall monitor operation of traffic signal controllers and report to the center any instances in which the indicator response does not match that expected from known indicator preemptions.
5. The field element shall return traffic signal controller operational status to the controlling center.
6. The field element shall return traffic signal controller fault data to the maintenance center for repair.

1. The field element shall respond to requests for indicator (e.g., signal) preemption requests from emergency vehicles at intersections, pedestrian crossings, and multimodal crossings.
2. The field element shall respond to requests for indicator (e.g., signal) priority requests from transit vehicles at intersections, pedestrian crossings, and multimodal crossings.
3. The field element shall notify controlling traffic management center and maintenance center that the signal timing has changed based on a signal preemption/priority request to help those centers determine whether a fault detected at the signal is a true malfunction or due to a signal override.

1. The field element shall include dynamic messages signs for dissemination of traffic and other information to drivers, under center control; the DMS may be either those that display variable text messages, or those that have fixed format display(s) (e.g. vehicle restrictions, or lane open/close).
2. The field element shall include driver information systems that communicate directly from a center to the vehicle radio (such as Highway Advisory Radios) for dissemination of traffic and other information to drivers, under center control.
3. The field element shall provide operational status for the driver information systems equipment (DMS, HAR, etc.) to the center.
4. The field element shall provide fault data for the driver information systems equipment (DMS, HAR, etc.) to the center for repair.

1. The field element shall collect, process, and send traffic images to the center for further analysis and distribution.
2. The field element shall remotely process video data and provide an indication of potential incidents to the traffic management center.
3. The field element's video devices shall be remotely controlled by a traffic management center.
4. The field element shall provide operational status and fault data for the incident detection devices to the traffic management center.

1. The field element shall collect and process, traffic sensor data in the vicinity of a highway-rail intersection (HRI).
2. The field element shall monitor the status of the highway-rail intersection (HRI) equipment, including both the current state and mode of operation and the current equipment condition, to be forwarded on to the traffic management center.
3. The field element shall monitor the status of the highway-rail intersection (HRI) equipment, including both the current state and mode of operation and the current equipment condition, to be forwarded on to the rail wayside equipment.
4. The field element shall receive track status from the rail wayside equipment that can be passed on to the traffic management center. This may include the current status of the tracks and whether a train is approaching.
5. The field element shall collect pedestrian images and pedestrian sensor data, and respond to pedestrian crossing requests via display, audio signal, or other manner.
6. The field element shall control the dynamic message signs (DMS) in the vicinity of a highway-rail intersection (HRI) to advise drivers, cyclists, and pedestrians of approaching trains.
7. The field element shall close the highway-rail intersection (HRI) when a train is approaching using gates, lights/signs, barriers, and traffic control signals.
8. The field element shall forward rail traffic advisories received from the Wayside Equipment to the traffic management center.

1. The field element shall include sensors (such as traffic, environmental, and work zone intrusion detection sensors) that provide data and status information to other field element devices (such as dynamic message signs, ramp meters, traffic signals, work zone intrusion alert systems), without center control.
2. The field element shall include sensors (such as traffic, environmental, and work zone intrusion detection sensors) that receive control information from other field element devices, without center control.

1. The field element shall collect, process, digitize, and send traffic sensor data (speed, volume, and occupancy) to the center for further analysis and storage, under center control.
2. The field element shall collect, process, and send traffic images to the center for further analysis and distribution.
3. The field element shall return sensor and CCTV system operational status to the controlling center.
4. The field element shall return sensor and CCTV system fault data to the controlling center for repair.
5. The field element shall collect, digitize, and send pedestrian sensor data to the center for further analysis and storage.

1. The field element shall control traffic signals at intersections and on main highways for urban and rural areas, under center control.
2. The field element shall collect pedestrian images and pedestrian sensor data, and respond to pedestrian crossing requests via display, audio signal, or other manner.
3. The field element shall monitor operation of traffic signal controllers and report to the center any instances in which the indicator response does not match that expected from the indicator control information.
4. The field element shall monitor operation of traffic signal controllers and report to the center any instances in which the indicator response does not match that expected from known indicator preemptions.
5. The field element shall return traffic signal controller operational status to the controlling center.
6. The field element shall return traffic signal controller fault data to the maintenance center for repair.

1. The field element shall respond to requests for indicator (e.g., signal) preemption requests from emergency vehicles at intersections, pedestrian crossings, and multimodal crossings.
2. The field element shall respond to requests for indicator (e.g., signal) priority requests from transit vehicles at intersections, pedestrian crossings, and multimodal crossings.
3. The field element shall notify controlling traffic management center and maintenance center that the signal timing has changed based on a signal preemption/priority request to help those centers determine whether a fault detected at the signal is a true malfunction or due to a signal override.

1. The field element shall include dynamic messages signs for dissemination of traffic and other information to drivers, under center control; the DMS may be either those that display variable text messages, or those that have fixed format display(s) (e.g. vehicle restrictions, or lane open/close).
2. The field element shall include driver information systems that communicate directly from a center to the vehicle radio (such as Highway Advisory Radios) for dissemination of traffic and other information to drivers, under center control.
3. The field element shall provide operational status for the driver information systems equipment (DMS, HAR, etc.) to the center.
4. The field element shall provide fault data for the driver information systems equipment (DMS, HAR, etc.) to the center for repair.

1. The field element shall collect, process, and send traffic images to the center for further analysis and distribution.
2. The field element shall remotely process video data and provide an indication of potential incidents to the traffic management center.
3. The field element's video devices shall be remotely controlled by a traffic management center.
4. The field element shall provide operational status and fault data for the incident detection devices to the traffic management center.

1. The field element shall collect and process, traffic sensor data in the vicinity of a highway-rail intersection (HRI).
2. The field element shall monitor the status of the highway-rail intersection (HRI) equipment, including both the current state and mode of operation and the current equipment condition, to be forwarded on to the traffic management center.
3. The field element shall monitor the status of the highway-rail intersection (HRI) equipment, including both the current state and mode of operation and the current equipment condition, to be forwarded on to the rail wayside equipment.
4. The field element shall receive track status from the rail wayside equipment that can be passed on to the traffic management center. This may include the current status of the tracks and whether a train is approaching.
5. The field element shall collect pedestrian images and pedestrian sensor data, and respond to pedestrian crossing requests via display, audio signal, or other manner.
6. The field element shall control the dynamic message signs (DMS) in the vicinity of a highway-rail intersection (HRI) to advise drivers, cyclists, and pedestrians of approaching trains.
7. The field element shall close the highway-rail intersection (HRI) when a train is approaching using gates, lights/signs, barriers, and traffic control signals.
8. The field element shall forward rail traffic advisories received from the Wayside Equipment to the traffic management center.

1. The field element shall include sensors (such as traffic, environmental, and work zone intrusion detection sensors) that provide data and status information to other field element devices (such as dynamic message signs, ramp meters, traffic signals, work zone intrusion alert systems), without center control.
2. The field element shall include sensors (such as traffic, environmental, and work zone intrusion detection sensors) that receive control information from other field element devices, without center control.