Hawaii Statewide ITS Architecture Element Expanded Functional Requirements: HDOT-HWY Connected Vehicle RSE Functional Area: Roadway Probe Beacons The field element shall communicate with passing vehicles for traffic data link time calculations and send collected data to the controlling center; identification will be removed to ensure anonymity. The field element shall communicate with on-board equipment on passing vehicles to collect current vehicle position, speed, and heading and a record of previous events (e.g., starts and stops, link travel times) that can be used to determine current traffic conditions. The field element shall communicate with on-board equipment on passing vehicles to collect current status information and a record of previous events (e.g., temperature, wiper status, headlight status, traction control system status) that can be used to determine road and surface weather conditions. The field element shall communicate with on-board equipment on passing vehicles to collect vehicle trip information (e.g., origin and destination information, travel times) that can be used to support transportation planning. The field element shall communicate with on-board equipment on passing vehicles to collect a history of precise positioning information that can be used to derive or verify accurate roadway geometry and lane features for use by map update providers. The field element shall aggregate and forward collected probe information to the center. The field element shall provide roadside equipment operational status to the center. The field element shall provide roadside equipment fault indication to the center for repair. Functional Area: Roadway Equipment Coordination The field element shall include sensors that provide data and status information to other field element devices, without center control. The field element shall include sensors that receive configuration data from other field element devices, without center control. The field element shall include devices that provide data and status information to other field element devices without center control. The field element shall include devices that receive configuration data from other field element devices, without center control.

The Hawaiian language uses two diacritical markings. The 'okina is a glottal stop; and the kahako is a macron. The State of Hawaii strongly encourages the use of Hawaiian diacritical markings. The National ITS Architecture tool, Turbo Architecture, does not allow for the Hawaiian diacritical markings to be input and as such, customized service package diagrams, operational concepts and other outputs from Turbo are unable to reflect the diacritical markings. To ensure consistency in this ITS Architecture website, no Hawaiian diacritical markings will be used.