ITS Roadway Equipment --> Traffic Management Center:
reversible lane status

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

reversible lane status (Information Flow): Current reversible lane status including traffic sensor and surveillance data and the operational status and mode of the reversible lane control equipment.

ITS Roadway Equipment (Source Physical Object): 'ITS Roadway Equipment' represents the ITS equipment that is distributed on and along the roadway that monitors and controls traffic and monitors and manages the roadway. This physical object includes traffic detectors, environmental sensors, traffic signals, highway advisory radios, dynamic message signs, CCTV cameras and video image processing systems, grade crossing warning systems, and ramp metering systems. Lane management systems and barrier systems that control access to transportation infrastructure such as roadways, bridges and tunnels are also included. This object also provides environmental monitoring including sensors that measure road conditions, surface weather, and vehicle emissions. Work zone systems including work zone surveillance, traffic control, driver warning, and work crew safety systems are also included.

Traffic Management Center (Destination Physical Object): The 'Traffic Management Center' monitors and controls traffic and the road network. It represents centers that manage a broad range of transportation facilities including freeway systems, rural and suburban highway systems, and urban and suburban traffic control systems. It communicates with ITS Roadway Equipment and Connected Vehicle Roadside Equipment (RSE) to monitor and manage traffic flow and monitor the condition of the roadway, surrounding environmental conditions, and field equipment status. It manages traffic and transportation resources to support allied agencies in responding to, and recovering from, incidents ranging from minor traffic incidents through major disasters.

Included In

This Triple is in the following Service Packages:

This triple is associated with the following Functional Objects:

This Triple is described by the following Functional View Data Flows:

This Triple has the following triple relationships:

None

Communication Solutions

(None-Data) - Secure Internet (ITS) (43)
(None-Data) - Apache Kafka (44)
(None-Data) - OMG DDS (44)
(None-Data) - OASIS MQTT (50)
(None-Data) - OASIS AMQP (61)

Solutions are sorted in ascending Gap Severity order. The Gap Severity is the parenthetical number at the end of the solution.

Selected Solution

(None-Data) - Apache Kafka

Solution Description

This solution is used within Canada and the U.S.. It combines standards associated with (None-Data) with those for Apache Kafka. The (None-Data) standards include an unspecified set of standards at the upper layers. The Apache Kafka standards include lower-layer open source code that supports data distribution of specific types of data.

ITS Application Entity Development needed			Click gap icons for more info.
Mgmt Apache Zookeeper	Facilities Development needed Apache Kafka Apache Zookeeper	Security IETF RFC 8446
	TransNet IP Alternatives IETF RFC 9293
	Access Internet Subnet Alternatives

Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.

Characteristics

Characteristic	Value
Time Context	Recent
Spatial Context	Local
Acknowledgement	True
Cardinality	Unicast
Initiator	Destination
Authenticable	True
Encrypt	True

Interoperability	Description
Local	In cases where an interface is normally encapsulated by a single stakeholder, interoperability is still desirable, but the motive is vendor independence and the efficiencies and choices that an open standards-based interface provides.

Security

Information Flow Security
	Confidentiality	Integrity	Availability
Rating	Moderate	Moderate	Moderate
Basis	May contain surveillance data; if that data includes license plates or other imagery, observation by a third party should be discouraged at this point (public camera data may be republished under other flows, but as chosen by the operator). Without such personally-focused surveillance data, this may be LOW.	Since this reports the status of reversible controls, any corruption or modification could have a catastrophic impact (if the center though the lanes were open in the opposite direction and allowed head-on traffic into the lanes). However, any such reversing should be accompanied by verification, either by camera or direct visual inspection, justifying lowering this to MODERATE.	Reversible lane controls should always be accessible, however this status flow will be supported by another, generally visual confirmation.

Security Characteristics	Value
Authenticable	True
Encrypt	True

ITS Roadway Equipment --> Traffic Management Center:reversible lane status