Transportation Information Center --> Personal Information Device:
broadcast traveler information

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

broadcast traveler information (Information Flow): General traveler information that contains traffic and road conditions, link travel times, incidents, advisories, restrictions, vehicle requirements, work zones, transit service information, weather information, parking information, and other related traveler information.

Transportation Information Center (Source 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.

Personal Information Device (Destination Physical Object): The 'Personal Information Device' provides the capability for travelers to receive formatted traveler information wherever they are. Capabilities include traveler information, trip planning, and route guidance. Frequently a smart phone, the Personal Information Device provides travelers with the capability to receive route planning and other personally focused transportation services from the infrastructure in the field, at home, at work, or while en-route. Personal Information Devices may operate independently or may be linked with vehicle on-board equipment. This subsystem also supports safety related services with the capability to broadcast safety messages and initiate a distress signal or request for help.

Included In

This Triple is in the following Service Packages:

TI01: Broadcast Traveler Information

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

TMC - Wide Area Broadcast (7)
TPEG2 - Wide Area Broadcast (7)
US: SAE Other J2735 - Wide Area Broadcast (13)
Data for Distribution (TBD) - Apache Kafka over Wireless (36)
Data for Distribution (TBD) - OMG DDS over Wireless (36)
Data for Distribution (TBD) - OASIS MQTT over Wireless (42)
Data for Distribution (TBD) - OASIS AMQP over Wireless (45)

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

Selected Solution

US: SAE Other J2735 - Wide Area Broadcast

Solution Description

This solution is used within the U.S.. It combines standards associated with US: SAE Other J2735 with those for C-X: Wide Area Broadcast. The US: SAE Other J2735 standards include upper-layer standards required to implement V2X information flows that do not yet have fully specified functionality and performance charcateristics. The C-X: Wide Area Broadcast standards include lower-layer standards that support one entity broadcasting information to all wireless devices over an area that covers at least a metropolitan area without any expectation of acknowledgement or response; security is provided by the upper-layers.

ITS Application Entity SAE J2735			Click gap icons for more info.
Mgmt Proprietary	Facilities SAE J2735	Security Proprietary
	TransNet Proprietary
	Access WAW Broadcast 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	False
Cardinality	Broadcast
Initiator	Source
Authenticable	True
Encrypt	False

Interoperability	Description
National	This triple should be implemented consistently within the geopolitical region through which movement is essentially free (e.g., the United States, the European Union).

Security

Information Flow Security
	Confidentiality	Integrity	Availability
Rating	Not Applicable	Moderate	Low
Basis	By definition this is publicly broadcast data.	The distribution of this data is intended to be very large, as such the impact of corrupted data will be significant. Probably not HIGH, as there are other distribution channels for this data.	There are multiple channels for the delivery of this information, so if this one is not available, others will work.

Security Characteristics	Value
Authenticable	True
Encrypt	False

Transportation Information Center --> Personal Information Device:broadcast traveler information