US: GTFS - Secure Wireless Internet (ITS)
Description
This solution is used within the U.S.. It combines standards associated with US: GTFS with those for I–M: Secure Wireless Internet (ITS). The US: GTFS standards include upper–layer standards required to implement public, transit–related communications. The I–M: Secure Wireless Internet (ITS) standards include lower–layer standards that support secure communications between two entities, either or both of which may be mobile devices, but they must be stationary or only moving within wireless range of a single wireless access point (e.g., a parked car). Security is based on X.509 or IEEE 1609.2 certificates. A non–mobile (if any) endpoint may connect to the service provider using any Internet connection method.
Includes Standards
| Level | DocNum | FullName | Description |
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| ITS Application Entity | GTFS Realtime | General Transit Feed Specification Realtime | This document defines a feed specification that allows public transportation agencies to provide real–time updates about their fleet to application developers. It is an extension to GTFS (General Transit Feed Specification), an open data format for public transportation schedules and associated geographic information. GTFS Realtime was designed around ease of implementation, good GTFS interoperability and a focus on passenger information. |
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| ITS Application Entity | GTFS | General Transit Feed Specification | This document defines a common (open data) format for exchanging public transportation schedules and associated geographic information. |
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| Facilities | IETF RFC 7230 | Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing | This standard (RFC) defines the main Application Layer protocol used for the world–wide web. |
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| Facilities | ISO 21320–1 | Information technology — Document Container File — Part 1: Core | ISO/IEC 21320–1 specifies the core requirements for 1) document container files, and 2) implementations that produce and/or consume document container files. It normatively references the Zip File Format Specification version 6.3.3 of PKWARE(R) Inc. Document container files are conforming Zip files as specified by that document. |
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| Facilities | IETF RFC 4180 | Common Format and MIME Type for Comma–Separated Values (CSV) Files | This standard (RFC) documents the format used for Comma–Separated Values (CSV) files and registers the associated MIME type "text/csv". |
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Readiness: Moderate
Readiness Description
Two significant or one significant and several minor issues. For existing deployments, the chosen solution is likely deficient in security or management capabilities and the issues should be reviewed and upgrades developed as needed. For new deployments, the solution may be viable for pilots when applied to the triples it supports; such pilot deployments should consider a path to addressing these issues as a part of their design activities. The solution does not provide sufficient interoperability, management, and security to enable proper, full–scale deployment without additional work.
Issues
| Issue | Severity | Description | Associated Standard | Associated Triple |
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| Application specification not defined | High | The logic, performance, and application security rules are not defined for this information flow. | (None) | (All) |
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| Not a standard (minor) | Low | The document is publicly available and widely used but it is not currently a formal standard. | GTFS Realtime | (All) |
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| Not a standard (minor) | Low | The document is publicly available and widely used but it is not currently a formal standard. | General Transit Feed Specification | (All) |
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Supports Interfaces
| Source | Destination | Flow |
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| BCRTA Transit System Dispatch | BCRTA Transit Vehicles | transit traveler information |
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| BCRTA Transit System Dispatch | Traveler Information Devices | personal transit information |
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| CTC Transit Dispatch | CTC Transit Vehicles | transit traveler information |
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| CTC Transit Dispatch | Traveler Information Devices | personal transit information |
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| Local Transit Systems | Local Transit Vehicles | transit traveler information |
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| Local Transit Systems | Traveler Information Devices | personal transit information |
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| SORTA Riverfront Transit Center | Cincinnati Streetcar Rail Vehicles | transit traveler information |
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| SORTA Riverfront Transit Center | SORTA ACCESS Vehicles | transit traveler information |
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| SORTA Riverfront Transit Center | SORTA Fixed Route Vehicles | transit traveler information |
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| SORTA Transit Dispatch Center | SORTA ACCESS Vehicles | transit traveler information |
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| SORTA Transit Dispatch Center | SORTA Fixed Route Vehicles | transit traveler information |
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| SORTA Transit Dispatch Center | Traveler Information Devices | personal transit information |
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| TANK Transit System Dispatch | RAMP Transit Vehicles | transit traveler information |
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| TANK Transit System Dispatch | TANK Transit Vehicles | transit traveler information |
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| TANK Transit System Dispatch | Traveler Information Devices | personal transit information |
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| University of Cincinnati Shuttle Dispatch | Traveler Information Devices | personal transit information |
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| University of Cincinnati Shuttle Dispatch | University of Cincinnati Shuttle Vehicles | transit traveler information |
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