4.1.2: Determine Transit Vehicle Service Status

This process shall determine the overall status of the transit vehicle, including the assigned operator, route, and schedule. This process shall determine the schedule deviation and estimated times of arrival (ETA) at transit stops of a transit vehicle. The data shall be used to calculate corrective instructions for output to the transit vehicle operators, for use in calculation of a much wider return to schedule strategy where more than one vehicle and/or service is involved. This process shall also send the data to the transit vehicle operator so that the operator is aware of the actual schedule deviation. This process shall generate corrective instructions for output to the transit vehicle operator based on instructions from the controlling center, processes on-board the vehicle, and priority requests for traffic signal controllers at intersections. The process shall receive input from the transit vehicle operator that is then distributed to another process in Manage Transit concerning transit schedules, passenger loading, and other service status. The interface shall also provide data to the transit vehicle operator about how far the vehicle is from its schedule and what corrective action the operator must take. This process shall provide requests for signal priority in a form that can be used by the controllers at intersections, pedestrian crossings, and multimodal crossings on the roads (surface streets) and freeway (ramp controls) network served by the Manage Traffic function to provide priority of the transit vehicle. This process shall provide the capability to broadcast a message concerning the status of the vehicle (e.g. that the vehicle is loading passengers or reentering the traffic lanes) to equipped vehicles in the vicinity. Upon receiving instructions from the Manage Transit Vehicle Deviations process to hold at a location in order to protect an incoming passengers connection, this process shall inform the operator of the hold and the length of time to hold. This process shall recalculate its status based on the hold instruction in order to determine the overall schedule adherence. When passengers on board the vehicle requests to protect their connection, i.e. help them make sure they make their next bus or train, this process shall forward the request for a deviation on to the Manage Deviations process along with the details of the vehicle/route for which a connection will be made. This process shall take the responses and forward them to the transit advisory process.

This process is associated with the Transit Vehicle OBE physical object.

This process is associated with the following functional objects:

This process is associated with the following data flows: