Transportation Information Center --> Other Transportation Information Centers:
special vehicle alert
This triple is bi-directional. See also
Other Transportation Information Centers --> Transportation Information Center: special vehicle alert
Definitions
special vehicle alert (Information Flow): Notification that a vehicle is in the vicinity that requires special attention from drivers. In this context, 'special vehicle' refers to any type of vehicle that uses lights or placards to alert drivers including public safety vehicles, oversize vehicles, slow vehicles, and service vehicles that stop and back up frequently.
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.
Other Transportation Information Centers (Destination Physical Object): Representing another Transportation Information Center, this object is intended to provide a source and destination for ITS information flows between peer information and service provider functions. It enables cooperative information sharing between providers as conditions warrant.
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:
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Communication Solutions
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US: SAE Other J2735 - Secure Internet (ITS) (12)
Selected Solution
US: SAE Other J2735 - Secure Internet (ITS)Solution Description
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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 | Now |
| Spatial Context | Regional |
| Acknowledgement | True |
| Cardinality | Unicast |
| Initiator | Source |
| Authenticable | True |
| Encrypt | True |
| 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 | Moderate | High | Moderate | |
| Basis | This flow is related to a flow that is effectively broadcast and intended for all, but since this flow goes between centers, an observer could learn of the locations of emergency vehicles on a broad scale by monitoring, increasing the awareness of a potentially nefarious actor. Thus, should probably be protected at some level. | The recipient must be sure that the originator is legitimate, as many of these alerts demand action by the recipient (pull over, make way, etc.). Since this power could easily be abused, it should be difficult to forge. Since this power is also often tied to emergency vehicle (life-saving) activity, it should not be interfered with. Availability is MODERATE because other mechanism (sirens, flashing lights) exist to provide the same message. | The recipient must be sure that the originator is legitimate, as many of these alerts demand action by the recipient (pull over, make way, etc.). Since this power could easily be abused, it should be difficult to forge. Since this power is also often tied to emergency vehicle (life-saving) activity, it should not be interfered with. Availability is MODERATE because other mechanism (sirens, flashing lights) exist to provide the same message. | |
| Security Characteristics | Value |
|---|---|
| Authenticable | True |
| Encrypt | True |