Surface Transportation Weather Service --> Transportation Information Center:
transportation weather information

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

transportation weather information (Information Flow): Current and forecast road conditions and weather information (e.g., surface condition, flooding, wind advisories, visibility, etc.) associated with the transportation network. This information is of a resolution, timeliness, and accuracy to be useful in transportation decision making.

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.

Transportation Information Center (Destination Physical Object): The 'Transportation Information Center' collects, processes, stores, and disseminates transportation information to system operators and the traveling public. The physical object can play several different roles in an integrated ITS. In one role, the TIC provides a data collection, fusing, and repackaging function, collecting information from transportation system operators and redistributing this information to other system operators in the region and other TICs. In this information redistribution role, the TIC provides a bridge between the various transportation systems that produce the information and the other TICs and their subscribers that use the information. The second role of a TIC is focused on delivery of traveler information to subscribers and the public at large. Information provided includes basic advisories, traffic and road conditions, transit schedule information, yellow pages information, ride matching information, and parking information. The TIC is commonly implemented as a website or a web-based application service, but it represents any traveler information distribution service.

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

EU: DATEX - DATEX Messaging (3)
US: TMDD - NTCIP Messaging (10)
(None-Data) - Secure Internet (ITS) (32)
Data for Distribution (TBD) - Apache Kafka (36)
Data for Distribution (TBD) - OMG DDS (36)
(None-Data) - OASIS MQTT (42)
Data for Distribution (TBD) - OASIS MQTT (42)
Data for Distribution (TBD) - OASIS AMQP (45)

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

Selected Solution

Data for Distribution (TBD) - OMG DDS

Solution Description

This solution is used within the U.S.. It combines standards associated with Data for Distribution (TBD) with those for OMG DDS. The Data for Distribution (TBD) standards include a placeholder for upper-layer standards necessary to define the data (elements and structures) necessary to complete a solution for the information flow based on data distribution technologies. The data standard will need to include a specific customization for the desired data distribution technology used (e.g., Kafka, DDS, etc.).. 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 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	Moderate
Basis	Typically intended for public distribution.	There are several mechanisms by which weather information gets to a traveler, though given that the TIC may be performing some data fusion and providing value-added information, this data should be exchanged with some protection on its contents.	There are several mechanisms by which weather information gets to a traveler, though given that the TIC may be performing some data fusion and providing value-added information, this data should be exchanged with some protection on its contents.

Security Characteristics	Value
Authenticable	True
Encrypt	False

Surface Transportation Weather Service --> Transportation Information Center:transportation weather information