Hawaii Statewide ITS Architecture

Functional Requirements: Roadway HOV Control

Description: This equipment package monitors and controls high occupancy vehicle (HOV) and high occupancy toll (HOT) lanes. It includes traffic sensors that monitor HOV lane usage and display equipment such as lane control signals that provide lane status to drivers.
Functional Requirements:
  1. The field element shall include sensors to detect high-occupancy vehicle (HOV) lane usage, under center control.
  2. The field element shall include driver information systems to notify users of lane status for lanes that become HOV or High Occupancy Toll (HOT) lanes during certain times of the day on freeways, under center control.
  3. The field element shall include freeway control devices, such as ramp signals and mainline metering and other systems associated with freeway operations that control use of HOV lanes, under center control.
  4. The field element shall collect a count of vehicle occupants from passing vehicles using field-vehicle communications.
  5. The field element shall provide traffic flow measures and information regarding vehicle occupancy (i.e., lane usage) in HOV lanes to the center.
  6. The field element shall return operational status for the HOV lane sensors to the controlling center.
  7. The field element shall return fault data for the HOV lane sensors to the center for repair.
  8. The field element shall include freeway control devices that control use of lanes, under center control.
Included In: HDOT-HWY Field Devices

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.