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WAT Transit Vehicles

Status:

Existing

Definition:

This element represents the WAT transit buses.

Stakeholder:

Williamsburg Area Transport

Architecture Flow Diagrams
which include WAT Transit Vehicles:

• WAT Transit Vehicles WAT Operations Center

Architecture Flows
to/from the WAT Transit Vehicles:

WAT Transit Vehicles WAT Operations Center

• demand response passenger and use data


• transit vehicle location data


• transit vehicle schedule performance

WAT Operations CenterWAT Transit Vehicles

• transit schedule information

National ITS Architecture Subsystems
mapped to the WAT Transit Vehicles:

• Transit Vehicle Subsystem

National ITS Architecture Services
associated with WAT Transit Vehicles:

• APTS01 - Transit Vehicle Tracking - WAT -- (Graphic)
• APTS02 - Transit Fixed-Route Operations - WAT -- (Graphic)
• APTS03 - Demand Response Transit Operations - WAT -- (Graphic)

National ITS Architecture Functional Requirements
associated with WAT Transit Vehicles:

On-board Schedule Management

1. The transit vehicle shall receive a vehicle assignment including transit route information, transit service instructions, traffic information, road conditions, and other information for the operator.
2. The transit vehicle shall use the route information and its current location to determine the deviation from the predetermined schedule.
3. The transit vehicle shall calculate the estimated times of arrival (ETA) at transit stops.
4. The transit vehicle shall determine scenarios to correct the schedule deviation.
5. The transit vehicle shall provide the schedule deviations and instructions for schedule corrections to the transit vehicle operator if the deviation is small, or the transit vehicle is operating in an urban area.
6. The transit vehicle shall send the schedule deviation and estimated arrival time information to the center.
7. The transit vehicle shall support the operations of a flexible route service. This may include requests for route deviations that would then lead to schedule corrective actions.
8. The transit vehicle shall notify the transit center of vehicle location and operational status as the vehicle exits and returns to the transit facility to support future vehicle assignments.

On-board Passenger Counting

1. The transit vehicle shall count passengers boarding and alighting.
2. The passenger counts shall be related to location to support association of passenger counts with routes, route segments, or bus stops.
3. The passenger counts shall be timestamped so that ridership can be measured by time of day and day of week.
4. The transit vehicle shall send the collected passenger count information to the transit center.

On-board Transit Information Services

1. The transit vehicle shall enable traffic and travel advisory information to be requested and output to the traveler. Such information may include transit routes, schedules, transfer options, fares, real-time schedule adherence, current incidents, weather conditions, and special events.
2. The transit vehicle shall broadcast advisories about the imminent arrival of the transit vehicle at the next stop via an on-board automated annunciation system.
3. The transit vehicle shall support input and output forms that are suitable for travelers with physical disabilities.
4. The transit vehicle shall gather transit advisory data, including alerts and advisories pertaining to major emergencies, or man made disasters.
5. The transit vehicle shall tailor the output of the request traveler information based on the current location of the transit vehicle.