Interface: KTA Traffic Field Equipment - KDOT Traffic Cameras
Information Flow Definitions
conflict monitor status (Long-term)
A control flow that supports failsafe operation in the event that a conflict is detected that requires the RSE to enter a failsafe operating mode for intersection management. Analogous to a traffic signal conflict monitor, this flow is issued when differences are detected between information provided to the vehicle for in–vehicle display and information displayed by field devices. It contains the details of differences that were found.
intersection control status (Long-term)
Status data provided by the traffic signal controller including phase information, alarm status, and priority/preempt status.
intersection status monitoring (Long-term)
Current signal phase and timing information for all lanes at a signalized intersection. This flow represents monitoring of communications by a receiver at the intersection to support monitoring for conflicts between actual signal states and RSE communications about those states.
local priority request coordination (Long-term)
The direct flow of information between field equipment. This includes notification of crossing calls from pedestrians and other vulnerable road users and requests for signal prioritization or preemption, and any other request for right–of–way at an intersection. The status of the priority request is also shared. For vulnerable road users, this includes information provided to guide and warn vulnerable road users at crossings including crossing permission status and crossing time remaining.
signal control coordination (Long-term)
The direct flow of information between field equipment. This includes configuration and control of traffic signal controllers or field masters. Configuration data and operational status of traffic signal control equipment including operating condition and current indications are returned.
signal service request (Long-term)
A call for service or extension for a signal control phase that is issued by the RSE for connected vehicles approaching an intersection and/or pedestrians at a crosswalk. This flow identifies the desired phase and service time.
traffic detector coordination (Long-term)
The direct flow of information between field equipment. This includes information used to configure and control traffic detector systems such as inductive loop detectors and machine vision sensors Raw and/or processed traffic detector data is returned that 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 situation data (Long-term)
Current, aggregate traffic data collected from connected vehicles that can be used to supplement or replace information collected by roadside traffic detectors. It includes raw and/or processed reported vehicle speeds, counts, and other derived measures. Raw and/or filtered vehicle control events may also be included to support incident detection.