ITS Roadway Equipment --> Multi-Access Edge Computing:
vehicle signage local data

This flow may also be implemented by ITS Roadway Equipment --> Connected Vehicle Roadside Equipment: vehicle signage local data

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

vehicle signage local data (Information Flow): Information provided by adjacent field equipment to support in-vehicle signing of dynamic information that is currently being displayed to passing drivers. This includes the dynamic information (e.g., local traffic and road conditions, work zone information, lane restrictions, detours, closures, advisories, parking availability, etc.) and control parameters that identify the desired timing, duration, and priority of the signage data.

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.

Multi-Access Edge Computing (Destination Physical Object): 'Multi-Access Edge Computing' ((MEC) previously known as mobile edge computing) represents computing devices that operate and are managed like a cloud server, but are deployed at the edge of a network (typically a cellular network, but it could be any network). While not in strict proximity to the transportation network, these systems do benefit from vastly decreased distances to the roadway compared to central systems, and so can provide lower latency than strictly backoffice systems

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:

None

This Triple has the following triple relationships:

None

Communication Solutions

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

Selected Solution

US: NTCIP Message Sign - Wireless SNMPv3/TLS

Solution Description

This solution is used within Canada and the U.S.. It combines standards associated with US: NTCIP Message Sign with those for I-M: Wireless SNMPv3/TLS. The US: NTCIP Message Sign standards include upper-layer standards required to implement center-to-field message sign communications. The I-M: Wireless SNMPv3/TLS standards include lower-layer standards that support secure infrastructure-to-mobile communications using simple network management protocol (SNMPv3).

ITS Application Entity NTCIP 1203			Click gap icons for more info.
Mgmt NTCIP 1201 Bundle: SNMPv3 MIB	Facilities NTCIP 1203 ISO 15784-2	Security IETF RFC 6353 IETF RFC 9456
	TransNet IP Alternatives Internet Transport Alternatives
	Access Wireless Internet Alternatives (NA)

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	Adjacent
Acknowledgement	False
Cardinality	Unicast
Initiator	Destination
Authenticable	True
Encrypt	False

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	This data is intentionally transmitted to everyone via a broadcast. It is meant to augment other signage data, and by definition is meant to be shared with everyone; however, all communications between field infrastructure should be protected from viewing to prevent attackers from analyzing traffic and developing attack methods.	These signs are meant to augment other visual cues to the driver. They should be accurate, but any inaccuracies should be corrected for by other means.	These notifications are helpful to a driver, but if the driver does not receive this notification immediately, there should still be other visual cues.

Security Characteristics	Value
Authenticable	True
Encrypt	False

ITS Roadway Equipment --> Multi-Access Edge Computing:vehicle signage local data