Traffic Management Center --> Multi-Access Edge Computing:
vehicle signage application info

This flow may also be implemented by Traffic Management Center --> Connected Vehicle Roadside Equipment: vehicle signage application info

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

vehicle signage application info (Information Flow): In-vehicle signing application configuration data and messaging parameters. This flow provides a list of regulatory, warning, and information messages to be displayed and parameters that support scheduling and prioritizing messages to be issued to passing vehicles. This flow also supports remote control of the application so the application can be taken offline, reset, or restarted.

Traffic Management Center (Source 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.

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:

TM22: Dynamic Lane Management and Shoulder Use

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

(None-Data) - Secure Wireless Internet (EU) (43)
(None-Data) - Secure Wireless Internet (ITS) (43)

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) - Secure Wireless Internet (EU)

Solution Description

This solution is used within Australia and the E.U.. It combines standards associated with (None-Data) with those for I-M: Secure Wireless Internet (EU). The (None-Data) standards include an unspecified set of standards at the upper layers. The I-M: Secure Wireless Internet (EU) standards include lower-layer standards that support secure communications between two entities, either or both of which may be mobile devices, but they must be stationary or only moving within wireless range of a single wireless access point (e.g., a parked car). Security is based on X.509 certificates. A non-mobile (if any) endpoint may connect to the service provider using any Internet connection method.

ITS Application Entity Development needed			Click gap icons for more info.
Mgmt Bundle: SNMPv3 MIB	Facilities Development needed	Security Secure Session Alternatives
	TransNet IP Alternatives Internet Transport Alternatives
	Access Wireless Internet Alternatives (EU)

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
Regional	Interoperability throughout the geopolitical region is highly desirable, but if implemented differently in different transportation management jurisdictions, significant benefits will still accrue in each jurisdiction. Regardless, this Information Flow Triple should be implemented consistently within a transportation jurisdiction (i.e., the scope of a regional architecture).

Security

Information Flow Security
	Confidentiality	Integrity	Availability
Rating	Moderate	Moderate	Moderate
Basis	Control flows, even for seemingly innocent devices, should be kept confidential to minimize attack vectors. While an individual installation may not be particularly impacted by a cyberattack of its sensor network, another installation might be severely impacted, and different installations are likely to use similar methods, so compromising one leads to compromising all.	If this is compromised, it could send unnecessary maintenance workers, or cause the appearance of excessive traffic violations, or not properly communicate areas where maintenance workers are operating for example. Not HIGH because regardless of the application, this flow alone does not directly drive injury or damage. DISC: WYO believes this to be HIGH.	Control flow availability is related to the criticality of being able to remotely control the device. For most devices, this is MODERATE. This data should be received in a timely manner after it is sent. This will determine which lanes are blocked off for emergency vehicle use in incident management applications. For purely passive devices with no incident relationship, this will be LOW. All devices should have default modes that enable them to operate without backhaul connectivity, so no device warrants a HIGH.

Security Characteristics	Value
Authenticable	True
Encrypt	True

Traffic Management Center --> Multi-Access Edge Computing:vehicle signage application info