Maui Regional ITS Architecture

Project Details: HDOT-HWY-M Traffic Operations Center (TOC)


PROJECT OVERVIEW

Project Name:

Project Details: HDOT-HWY-M Traffic Operations Center (TOC)

Description:

This project will create a traffic control center from which State traffic signals and other ITS equipment in the County of Maui will be monitored.

Status:

Planned

Timeframe:

Long-Term

Geographic Scope:

Maui

Project ID:

Stakeholders:

Hawaii Department of Transportation - Highways Division, Maui District

Service Packages:

APTS07-1 - Multi-modal Coordination - Maui Bus
ATMS01-1 - Network Surveillance - HDOT Highways Maui District (HDOT - HWY - M)
ATMS03-1 - Traffic Signal Control - HDOT
ATMS06-1 - Traffic Information Dissemination - HDOT Highway Maui District (HDOT-HWY-M)

Project Inventory:

HDOT-HWY-M Field Devices
HDOT-HWY-M Traffic Operations Center

FUNCTIONAL REQUIREMENTS

Click on a Project Inventory element from the list above to view functional requirements.

Collect Traffic Surveillance

  • The center shall monitor, analyze, and distribute traffic images from CCTV systems under remote control of the center.
  • The center shall monitor, analyze, and store traffic sensor data (speed, volume, occupancy) collected from field elements under remote control of the center.

Roadway Basic Surveillance

  • The field element shall return sensor and CCTV system operational status to the controlling center.
  • The field element shall collect, process, and send traffic images to the center for further analysis and distribution.
  • 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.

Roadway Signal Controls

  • The field element shall return traffic signal controller operational status to the center.
  • The field element shall report the current signal control information to the center.
  • The field element shall control traffic signals under center control.

Roadway Traffic Information Dissemination

  • 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).

TMC Signal Control

  • The center shall maintain traffic signal coordination including synchronizing clocks throughout the system.
  • The center shall manage boundaries of the control sections used within the signal system.
  • The center shall implement control plans to coordinate signalized intersections based on data from sensors.
  • The center shall manage (define, store and modify) control plans to coordinate signalized intersections, to be engaged at the direction of center personnel or according to a daily schedule.
  • The center shall collect traffic signal controller fault data from the field.
  • The center shall collect traffic signal controller operational status and compare against the control information sent by the center.
  • The center shall remotely control traffic signal controllers.

TMC Traffic Information Dissemination

  • The center shall collect operational status for the driver information systems equipment (DMS, HAR, etc.).
  • The center shall remotely control dynamic messages signs for dissemination of traffic and other information to drivers.

INTERFACES

Source Architecture Flows Destination
HDOT-HWY-M Field Devices roadway information system status HDOT-HWY-M Traffic Operations Center
HDOT-HWY-M Field Devices signal control status HDOT-HWY-M Traffic Operations Center
HDOT-HWY-M Field Devices traffic flow HDOT-HWY-M Traffic Operations Center
HDOT-HWY-M Field Devices traffic images HDOT-HWY-M Traffic Operations Center
HDOT-HWY-M Field Devices signal fault data HDOT-HWY-M Traffic Operations Center
HDOT-HWY-M Traffic Operations Center roadway information system data HDOT-HWY-M Field Devices
HDOT-HWY-M Traffic Operations Center traffic sensor control HDOT-HWY-M Field Devices
HDOT-HWY-M Traffic Operations Center signal control commands HDOT-HWY-M Field Devices
HDOT-HWY-M Traffic Operations Center video surveillance control HDOT-HWY-M Field Devices
HDOT-HWY-M Traffic Operations Center signal control device configuration HDOT-HWY-M Field Devices
HDOT-HWY-M Traffic Operations Center signal control plans HDOT-HWY-M Field Devices
HDOT-HWY-M Traffic Operations Center signal system configuration HDOT-HWY-M Field Devices

ITS STANDARDS

SDODocument IDTitleType
AASHTO/ITE/NEMA View List NTCIP Center-to-Center Standards Group Group
AASHTO/ITE/NEMA View List NTCIP Center-to-Field Standards Group Group
AASHTO/ITE/NEMA NTCIP 1201 Global Object Definitions Message/Data
AASHTO/ITE/NEMA NTCIP 1202 Object Definitions for Actuated Traffic Signal Controller (ASC) Units Message/Data
AASHTO/ITE/NEMA NTCIP 1203 Object Definitions for Dynamic Message Signs (DMS) Message/Data
AASHTO/ITE/NEMA NTCIP 1205 Object Definitions for Closed Circuit Television (CCTV) Camera Control Message/Data
AASHTO/ITE/NEMA NTCIP 1208 Object Definitions for Closed Circuit Television (CCTV) Switching Message/Data
AASHTO/ITE/NEMA NTCIP 1209 Data Element Definitions for Transportation Sensor Systems (TSS) Message/Data
AASHTO/ITE/NEMA NTCIP 1210 Field Management Stations (FMS) - Part 1: Object Definitions for Signal System Masters Message/Data
AASHTO/ITE/NEMA NTCIP 1211 Object Definitions for Signal Control and Prioritization (SCP) Message/Data
AASHTO/ITE/NEMA NTCIP 1214 Object Definitions for Conflict Monitor Units (CMU) Message/Data

OPERATIONAL CONCEPTS

Stakeholder Roles and Responsibilities
Hawaii Department of Transportation - Highways Division, Maui District
Obtain traffic images and traffic flow data through CCTVs and field sensors and maintain operational control of its own field equipment.
Operate traffic signal systems for State owned intersections.
Perform network surveillance for detection and verification of incidents on state roads.
Provide traffic information to travelers via HDOT DMS equipment.
 

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