6.8.1.1: Provide Traveler Guidance

This page shows the collection of processes that make up the Provide Traveler Guidance facility within the Provide On-line Traveler Guidance function. These processes determine the actual traveler guidance method, and generate the route and guidance instructions.

The key points about the facility are as follows:
- Guidance type depends on the traveler's request and on the availability of specific ppd equipment;
- Dynamic guidance requires communications links to a central facility;
- If dynamic guidance fails then autonomous guidance is automatically provided until it is restored.

There are four processes defined as Process Specifications (PSpecs) in this collection:

1) Determine Personal Portable Device Guidance Method (6.8.1.1.1)
2) Provide Personal Portable Device Dynamic Guidance (6.8.1.1.2)
3) Provide Personal Portable Device Autonomous Guidance (6.8.1.1.3)
4) Provide Personal Portable Device Wayfinding Guidance (6.8.1.1.4)