TRAVELER INFORMATION
While the underlying technologies associated with Advanced Traffic Management Systems are
mature enough to be deployable, those related to Advanced Traveler Information Systems (ATIS)
still need further research. ATIS cover both in-vehicle and home/office data gathering, analysis,
and travel plan generation. They are specifically concerned with:
l Traveler Advisory
0 Traveler Service Information
0 Trip Planning
l Location Determination and Display
l Route Selection
l Route Guidance
l In-Vehicle Signing
Further detailing the topics under each category of traveler information:
l Traveler Advisory
- Provide roadway congestion data.
- Advise on weather conditions.
- Advise on road incidents.
0 Traveler Service Information
- Identify travel service providers
- Advise on parking availability.
- Provide public service messages.
0 Trip Planning
-
Provide transit schedule and fare information.
- Provide delays estimate for congested roadway sections.
- Help select mode of travel, route, and departure time.
Location Determination and Display
- Use sign post, radio trilateration, or dead reckoning.
- Display location on map overlay.
l Route Selection
- Provide advanced trip planning.
- Consider user travel preferences.
- Use historical and real-time data.
l Route Guidance
- Convert planning route to routing instructions.
- Use simplified street diagrams and turn arrows.
- Advise on lane changes, turns, freeway exits, etc.
l In-Vehicle Signing
- Use voice or graphics unit.
- Display travel advisories.
- Indicate maximum speed, warn of an upcoming curve, etc.