Interface: SANDAG Virtual TMCs - Level 1 Cities Signals ITS Field Equipment
Information Flow Definitions
barrier system control (Planned)
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 (Planned)
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 (Planned)
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 environmental sensors. Operational status of the sensors is also included.
environmental sensors control (Planned)
Data used to configure and control environmental sensors.
lane management control (Planned)
Information used to configure and control dynamic lane management systems.
lane management information (Planned)
System status of managed lanes including current operational state, violations, and logged information. This includes lane usage information including both traditional traffic flow measures and special information associated with managed lanes such as measured passenger occupancies. It also includes the operational status of the lane management equipment.
passive vehicle monitoring control (Planned)
Control commands used to control detection systems that rely on infrastructure–based identification of individual vehicles to measure travel times and other related measures by identifying the same vehicle at different points in the network. Related technologies include Bluetooth readers and license plate recognition systems.
passive vehicle monitoring data (Planned)
Time stamped identifiers that identify the vehicles that have passed through a detection zone.
rail crossing control data (Planned)
Data required for HRI information transmitted at railroad grade crossings and within railroad operations.
rail crossing request (Planned)
A request for highway–rail intersection status or a specific control request intended to modify HRI operation.
rail crossing status (Planned)
Status of the highway–rail intersection equipment including both the current state or mode of operation and the current equipment condition.
right-of-way request notification (Planned)
Notice that a request has occurred for signal prioritization, signal preemption, pedestrian call, multi–modal crossing activation, or other source for right–of–way.
roadway advisory radio data (Planned)
Information used to initialize, configure, and control roadside highway advisory radio. This flow can provide message content and delivery attributes, local message store maintenance requests, control mode commands, status queries, and all other commands and associated parameters that support remote management of these systems.
roadway advisory radio status (Planned)
Current operating status of highway advisory radios.
roadway dynamic signage data (Planned)
Information used to initialize, configure, and control dynamic message signs. This flow can provide message content and delivery attributes, local message store maintenance requests, control mode commands, status queries, and all other commands and associated parameters that support remote management of these devices.
roadway dynamic signage status (Planned)
Current operating status of dynamic message signs.
roadway warning system control (Planned)
Information used to configure and control roadway warning systems.
roadway warning system status (Planned)
Current operating status of roadway warning systems.
shoulder management control (Planned)
Information used to configure and control systems that allow use of a shoulder as a lane for vehicular traffic.
shoulder management information (Planned)
System status including current operational state, violations and logged information.
signal control commands (Planned)
Control of traffic signal controllers or field masters including clock synchronization.
signal control device configuration (Planned)
Data used to configure traffic signal control equipment including local controllers and system masters.
signal control plans (Planned)
Traffic signal timing parameters including minimum green time and interval durations for basic operation and cycle length, splits, offset, phase sequence, etc. for coordinated systems.
signal control status (Planned)
Operational and status data of traffic signal control equipment including operating condition and current indications.
signal fault data (Planned)
Faults reported by traffic signal control equipment.
signal system configuration (Planned)
Data used to configure traffic signal systems including configuring control sections and mode of operation (time based or traffic responsive).
traffic detector control (Planned)
Information used to configure and control traffic detector systems such as inductive loop detectors and machine vision sensors.
traffic detector data (Planned)
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). This flow includes the traffic data and the operational status of the traffic detectors
traffic images (Planned)
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. Meta data that describes the images is contained in another flow.
video surveillance control (Planned)
Information used to configure and control video surveillance systems.