Interface: Intermodal Terminal Access Control - Municipal Field Equipment
Architecture Flow Definitions
barrier system control (Proposed)
Information used to configure and control barrier systems that are represented by gates, barriers and other automated or remotely controlled systems used to manage entry to roadways.
barrier system status (Proposed)
Current operating status of barrier systems. Barrier systems represent gates, barriers and other automated or remotely controlled systems used to manage entry to roadways. Status of the systems includes operating condition and current operational state.
environmental sensor data (Proposed)
Current road conditions (e.g., surface temperature, subsurface temperature, moisture, icing, treatment status) and surface weather conditions (e.g., air temperature, wind speed, precipitation, visibility) as measured and reported by fixed and/or mobile en
environmental sensors control (Proposed)
Data used to configure and control environmental sensors.
freeway control data (Proposed)
Control commands and operating parameters for ramp meters, mainline metering/lane controls and other systems associated with freeway operations.
freeway control status (Proposed)
Current operational status and operating parameters for ramp meters, mainline metering/lane controls and other control equipment associated with freeway operations.
HRI control data (Proposed)
Data required for HRI information transmitted at railroad grade crossings and within railroad operations.
HRI request (Proposed)
A request for highway-rail intersection status or a specific control request intended to modify HRI operation.
HRI status (Proposed)
Status of the highway-rail intersection equipment including both the current state or mode of operation and the current equipment condition.
intersection blockage notification (Proposed)
Notification that a highway-rail intersection is obstructed and supporting information.
request for right-of-way (Proposed)
Forwarded request from signal prioritization, signal preemption, pedestrian call, multi-modal crossing activation, or other source for right-of-way.
roadway equipment coordination (Proposed)
The direct flow of information between field equipment. This includes transfer of information between sensors and driver information systems (e.g., DMS, HAR) or control devices (e.g., traffic signals, ramp meters), direct coordination between adjacent con
roadway information system data (Proposed)
Information used to initialize, configure, and control roadside systems that provide driver information (e.g., dynamic message signs, highway advisory radio, beacon systems). This flow can provide message content and delivery attributes, local message st
roadway information system status (Proposed)
Current operating status of dynamic message signs, highway advisory radios, beacon systems, or other configurable field equipment that provides dynamic information to the driver.
signal control data (Proposed)
Information used to configure and control traffic signal systems.
signal control status (Proposed)
Status of surface street signal controls including operating condition and current operational state.
traffic flow (Proposed)
Raw and/or processed traffic detector data which allows derivation of traffic flow variables (e.g., speed, volume and density measures) and associated information (e.g., congestion, potential incidents) for mixed use vehicles.. This flow includes the tra
traffic images (Proposed)
High fidelity, real-time traffic images suitable for surveillance monitoring by the operator or for use in machine vision applications. This flow includes the images and the operational status of the surveillance system.
traffic probe data (Proposed)
Vehicle data that is used to determine traffic conditions. In a basic implementation, the data could be limited to time stamped unique identifiers that can be used to measure a vehicle’s progress through the network. In more advanced implementations, th
traffic sensor parameterization (Proposed)
Information used to configure and control traffic sensor systems.
video surveillance control (Proposed)
Information used to configure and control video surveillance systems.