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6.8.1.2: Provide Personal Portable Device Guidance Interface

This process shall be responsible for providing a user interface for the traveler through which personalized route guidance can be delivered. The process shall enable the traveler to input data to request a suitable route. This process shall be capable of supporting two types of route guidance: dynamic (infrastructure based guidance is provided to the personal portable device), and autonomous (the personal portable device uses only locally available data- there is no information provided by the infrastructure). The process shall also act as the interface for output of on-line guidance to the traveler. Multimodal routes shall be supported by the process. The process shall not provide on-line guidance until the route has been accepted by the traveler. For those forms of guidance that require an on-board map database, the process shall provide an interface through which the traveler may obtain and pay for an initial copy of the database plus updates when needed. The process shall support inputs from the traveler in either manual or audio form, and shall provide outputs in audible or visual forms. It shall enable the visual output to be either in hardcopy, or display. Both types of output shall be produced in such a way that in using them the traveler does not become a hazard to other travelers.

This process is associated with the Personal Information Device physical object.

This process is associated with the following application objects:

• Personal Trip Planning and Route Guidance

This process is associated with the following data flows:

• ft-guidance_data - In
• ft-guidance_map_update_request - In
• ft-guidance_request - In
• ft-guidance_route_accepted - In
• traveler_guidance_accepted - Out
• traveler_guidance_data - Out
• traveler_guidance_instructions - In
• traveler_guidance_request - Out
• traveler_input_request - In
• traveler_map_update_request - Out
• traveler_map_update_response - In
• traveler_personal_data - In
• traveler_personal_map_update_cost - Out
• traveler_personal_trip_feedback - Out
• tt-guidance - Out
• tt-guidance_input_request - Out
• tt-guidance_map_update_response - Out
• tt-guidance_route_details - Out