Transit Vehicle OBE --> Transit Management Center:
transit vehicle location data
Definitions
transit vehicle location data (Information Flow): Current transit vehicle location and related operational conditions data provided 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:
This triple is associated with the following Functional Objects:
- Transit Center Security
- Transit Center Vehicle Tracking
- Transit Vehicle On-Board Trip Monitoring
- Transit Vehicle Security
This Triple is described by the following Functional View Data Flows:
- paratransit_vehicle_location
- transit_vehicle_location_for_security
- transit_vehicle_location_for_store
- transit_vehicle_service_update
This Triple has the following triple relationships:
None |
Communication Solutions
- US: GTFS real-time - Secure Wireless Internet (ITS) (10)
- US: TCIP - Secure Wireless Internet (ITS) (18)
- US: SAE Other J2735 - Secure Wireless Internet (ITS) (20)
- (None-Data) - Secure Wireless Internet (EU) (43)
Selected Solution
Solution Description
ITS Application Entity
SAE J2735 |
Click gap icons for more info.
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Mgmt
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Facilities
SAE J2735 |
Security
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TransNet
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Access
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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
Characteristic | Value |
---|---|
Time Context | Recent |
Spatial Context | Local |
Acknowledgement | False |
Cardinality | Unicast |
Initiator | Source |
Authenticable | True |
Encrypt | True |
Interoperability | Description |
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Local | In cases where an interface is normally encapsulated by a single stakeholder, interoperability is still desirable, but the motive is vendor independence and the efficiencies and choices that an open standards-based interface provides. |
Security
Information Flow Security | ||||
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Confidentiality | Integrity | Availability | ||
Rating | Moderate | Moderate | Moderate | |
Basis | While internal, contains identification, passenger load and routing data that if observed could be used by an attacker to identify targets. | Applications relying on this data will not function properly if the data is incorrect, so it must be protected commensurate to the value of the application. | Applications relying on this data will not function properly if the data is incorrect, so it must be protected commensurate to the value of the application. Location data is dynamic, so probably needs to be updated frequently. |
Security Characteristics | Value |
---|---|
Authenticable | True |
Encrypt | True |