Transportation Information Center --> Transit Vehicle OBE:
intersection geometry

Definitions

intersection geometry (Information Flow): The physical geometry of an intersection covering the location and width of each approaching lane, egress lane, and valid paths between approaches and egresses. This flow also defines the location of stop lines, cross walks, specific traffic law restrictions for the intersection (e.g., turning movement restrictions), and other elements that support calculation of a safe and legal vehicle path through the intersection.

Transportation Information Center (Source Physical Object): The 'Transportation Information Center' collects, processes, stores, and disseminates transportation information to system operators and the traveling public. The physical object can play several different roles in an integrated ITS. In one role, the TIC provides a data collection, fusing, and repackaging function, collecting information from transportation system operators and redistributing this information to other system operators in the region and other TICs. In this information redistribution role, the TIC provides a bridge between the various transportation systems that produce the information and the other TICs and their subscribers that use the information. The second role of a TIC is focused on delivery of traveler information to subscribers and the public at large. Information provided includes basic advisories, traffic and road conditions, transit schedule information, yellow pages information, ride matching information, and parking information. The TIC is commonly implemented as a website or a web-based application service, but it represents any traveler information distribution service.

Transit Vehicle OBE (Destination 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.

This Triple is an instantiation of the more general triple:

• Transportation Information Center => Vehicle: intersection geometry

Included In

This Triple is in the following Service Packages:

• PT09: Transit Signal Priority

This triple is associated with the following Functional Objects:

• TIC Traffic Control Dissemination
• Vehicle Eco-Driving Assist
• Vehicle Intersection Movement
• Vehicle Map Management

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

• None

This Triple has the following triple relationships:

This Triple is an instantiation of the more general triple:

• Transportation Information Center => Vehicle: intersection geometry

Communication Solutions

• US: SAE Lane-Level Mapping - Secure Wireless Internet (ITS) (4)
• US: SAE Other J2735 - Secure Wireless Internet (ITS) (12)
• EU: Signal Control Messages - Secure Wireless Internet (EU) (16)
• Data for Distribution (TBD) - Apache Kafka over Wireless (44)
• Data for Distribution (TBD) - OMG DDS over Wireless (44)
• Data for Distribution (TBD) - Eclipse Zenoh over Wireless (44)
• Data for Distribution (TBD) - OASIS MQTT over Wireless (47)
• Data for Distribution (TBD) - OASIS AMQP over Wireless (61)

Selected Solution

US: SAE Lane-Level Mapping - Secure Wireless Internet (ITS)

Solution Description

ITS Application Entity SAE J2735 SAE J2945/A			Click gap icons for more info.
Mgmt Bundle: SNMPv3 MIB	Facilities SAE J2945 SAE J2945/A	Security ITS Security Alternatives 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.

This Triple is an instantiation of the more general triple:

• Transportation Information Center => Vehicle: intersection geometry

Characteristics

This Triple is an instantiation of the more general triple:

• Transportation Information Center => Vehicle: intersection geometry

Security