Surface Transportation Weather Service --> Traffic Management Center:
roadway micro forecast

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

roadway micro forecast (Information Flow): Forecast of weather and roadway conditions at a fine level of resolution (e.g. for individual links in the road network).

Surface Transportation Weather Service (Source Physical Object): The 'Surface Transportation Weather Service' represents the providers of value-added sector-specific meteorological services. These providers utilize National Weather Service data and predictions, road condition information and local environmental data provided by traffic management or maintenance organizations, and their own models to provide surface transportation related weather observations and forecasts including pavement temperature and conditions.

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:

WX04: Roadway Micro-Prediction

This triple is associated with the following Functional Objects:

TMC Road Weather Micro-Prediction

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

fstws-roadway_micro_prediction

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) - OMG DDS

Solution Description

This solution is used within Canada and the U.S.. It combines standards associated with (None-Data) with those for OMG DDS. The (None-Data) standards include an unspecified set of standards at the upper layers. The OMG DDS standards include lower-layer standards that support secure data sharing and command operations between remote devices.

ITS Application Entity Development needed			Click gap icons for more info.
Mgmt OMG DDS	Facilities Development needed OMG DDS OMG DDS-RPC OMG DDSI-RTPS	Security OMG DDS-Security
	TransNet IETF RFC 768 IP Alternatives
	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	Regional
Acknowledgement	True
Cardinality	Unicast
Initiator	Destination
Authenticable	True
Encrypt	False

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	Low	Moderate	Low
Basis	Should eventually be public, and regardless it is unlikely that sharing this data will cause any harm.	Could be used to make traffic management and personnel decisions, so some guarantee the data at the destination is what the sender intended is warranted. Still, this flow is a candidate for LOW if the range for integrity is opened up to include it.	Unlikely that the lack of this flow will radically change outcomes.

Security Characteristics	Value
Authenticable	True
Encrypt	False

Surface Transportation Weather Service --> Traffic Management Center:roadway micro forecast