Connected Vehicle Roadside Equipment --> Personal Information Device:
transit stop guidance

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

transit stop guidance (Information Flow): Information sent from bus stop infrastructure to portable devices that includes stop-specific bus schedules and routes.

Connected Vehicle Roadside Equipment (Source Physical Object): 'Connected Vehicle Roadside Equipment' (CV RSE) represents the Connected Vehicle roadside devices that are used to send messages to, and receive messages from, nearby vehicles using Dedicated Short Range Communications (DSRC) or other alternative wireless communications technologies. Communications with adjacent field equipment and back office centers that monitor and control the RSE are also supported. This device operates from a fixed position and may be permanently deployed or a portable device that is located temporarily in the vicinity of a traffic incident, road construction, or a special event. It includes a processor, data storage, and communications capabilities that support secure communications with passing vehicles, other field equipment, and centers.

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:

PT16: Route ID for the Visually Impaired

This triple is associated with the following Functional Objects:

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

field_to_traveler_transit_information

This Triple has the following triple relationships:

None

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

(None-Data) - WAVE WSMP

Solution Description

This solution is used within the U.S.. It combines standards associated with (None-Data) with those for V-X: WAVE WSMP. The (None-Data) standards include an unspecified set of standards at the upper layers. The V-X: WAVE WSMP standards include lower-layer standards that support connectionless, near constant, ultra-low latency vehicle-to-any communications within ~300m using the WAVE Short Messaging Protocol (WSMP) over IEEE WAVE in the 5.9GHz spectrum. The broadcast mode is interoperable with M5 FNTP.

ITS Application Entity Development needed			Click gap icons for more info.
Mgmt Addressed Elsewhere	Facilities Development needed	Security Bundle: IEEE 1609.2
	TransNet IEEE 1609.3
	Access Bundle: WAVE - Subnet

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	Adjacent
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	Moderate
Basis	This data is broadcast and intended for general consumption.	False information here could play havoc with an individual's schedule and cause inconvenience to users of transit services that received incorrect information.	This data should be available through other means, but it will be more convenient if available. Depending on the implementation and other dissemination methods, this may be LOW.

Security Characteristics	Value
Authenticable	True
Encrypt	False

Connected Vehicle Roadside Equipment --> Personal Information Device:transit stop guidance