Emergency Vehicle OBE --> 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.

Emergency Vehicle OBE (Source Physical Object): The 'Emergency Vehicle On-Board Equipment' (OBE) resides in an emergency vehicle and provides the processing, storage, and communications functions that support public safety-related connected vehicle applications. It represents a range of vehicles including those operated by police, fire, and emergency medical services. In addition, it represents other incident response vehicles including towing and recovery vehicles and freeway service patrols. It includes two-way communications to support coordinated response to emergencies. A separate 'Vehicle OBE' physical object supports the general vehicle safety and driver information capabilities that apply to all vehicles, including emergency vehicles. The Emergency Vehicle OBE supplements these general capabilities with capabilities that are specific to emergency vehicles.

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:

Communication Solutions

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

Selected Solution

Commercial Data - Secure Wireless Internet

Solution Description

This solution is used within Canada and the U.S.. It combines proprietary commercial standards at upper layers with wireless-capable Internet communications technologies.

ITS Application Entity
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IP Alternatives
IETF RFC 9293
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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 Adjacent
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 to a center, an observer could learn of the locations of the emergency vehicle acting as source from a remote location, which may contribute to a nefarious actor's situtational awareness. 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