Transit Vehicle OBE --> Transit Management Center:
transit vehicle schedule performance

Definitions

transit vehicle schedule performance (Information Flow): Estimated times of arrival and anticipated schedule deviations reported by a transit vehicle.

Transit Vehicle OBE (Source Physical Object): The 'Transit Vehicle On-Board Equipment' (OBE) resides in a transit vehicle and provides the sensory, processing, storage, and communications functions necessary to support safe and efficient movement of passengers. The types of transit vehicles containing this physical object include buses, paratransit vehicles, light rail vehicles, other vehicles designed to carry passengers, and supervisory vehicles. It collects ridership levels and supports electronic fare collection. It supports a traffic signal prioritization function that communicates with the roadside physical object to improve on-schedule performance. Automated vehicle location enhances the information available to the transit operator enabling more efficient operations. On-board sensors support transit vehicle maintenance. The physical object supports on-board security and safety monitoring. This monitoring includes transit user or vehicle operator activated alarms (silent or audible), as well as surveillance and sensor equipment. The surveillance equipment includes video (e.g. CCTV cameras), audio systems and/or event recorder systems. It also furnishes travelers with real-time travel information, continuously updated schedules, transfer options, routes, and fares. A separate 'Vehicle OBE' physical object supports the general vehicle safety and driver information capabilities that apply to all vehicles, including transit vehicles. The Transit Vehicle OBE supplements these general capabilities with capabilities that are specific to transit vehicles.

Transit Management Center (Destination Physical Object): The 'Transit Management Center' manages transit vehicle fleets and coordinates with other modes and transportation services. It provides operations, maintenance, customer information, planning and management functions for the transit property. It spans distinct central dispatch and garage management systems and supports the spectrum of fixed route, flexible route, paratransit services, transit rail, and bus rapid transit (BRT) service. The physical object's interfaces support communication between transit departments and with other operating entities such as emergency response services and traffic management systems.

Included In

This Triple is in the following Service Packages:

• PT01: Transit Vehicle Tracking
• PT02: Transit Fixed-Route Operations
• PT09: Transit Signal Priority
• PT10: Intermittent Bus Lanes
• PT14: Multi-modal Coordination
• PT17: Transit Connection Protection

This triple is associated with the following Functional Objects:

• Transit Center Connection Protection
• Transit Center Fixed-Route Operations
• Transit Center Multi-Modal Coordination
• Transit Center Priority Management
• Transit Center Vehicle Tracking
• Transit Vehicle On-Board Connection Protection
• Transit Vehicle On-Board Trip Monitoring
• Transit Vehicle Schedule Management
• Transit Vehicle Signal Priority

This Triple is described by the following Functional View Data Flows:

• transit_service_status
• transit_vehicle_deviations_from_schedule
• transit_vehicle_eta
• transit_vehicle_location_for_deviation
• transit_vehicle_running_times
• transit_vehicle_schedule_deviation
• transit_vehicle_service_update

This Triple has the following triple relationships:

Communication Solutions

• EU: SIRI - Secure Wireless Internet (EU) (9)
• US: GTFS real-time - Secure Wireless Internet (ITS) (10)
• US: TCIP - Secure Wireless Internet (ITS) (18)
• (None-Data) - Secure Wireless Internet (EU) (43)

Selected Solution

US: GTFS real-time - Secure Wireless Internet (ITS)

Solution Description

ITS Application Entity GTFS Realtime			Click gap icons for more info.
Mgmt Bundle: SNMPv3 MIB	Facilities IETF RFC 7159 ISO 21320-1 IETF RFC 4180 IETF RFC 9110 IETF RFC 9112	Security Secure Session Alternatives
	TransNet IP Alternatives Internet Transport Alternatives
	Access Wireless Internet Alternatives (NA)

Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.

Characteristics

Security