OKI Regional ITS Architecture

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

Description

This solution is used within the U.S.. It combines standards associated with US: GTFS real–time with those for I–I: Secure Internet (ITS). The US: GTFS real–time standards include upper–layer standards required to implement real–time, public, transit–related communications. The I–I: Secure Internet (ITS) standards include lower–layer standards that support secure communications between ITS equipment using X.509 or IEEE 1609.2 security certificates.

Includes Standards

Level	DocNum	FullName	Description
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.
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.
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.
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".
Access		Internet Subnet Alternatives	A set of alternative standards that includes any Subnet Layer method of connecting to the Internet.

Readiness: High–Moderate

Readiness Description

One significant or possibly a couple minor issues. For existing deployments, the chosen solution likely has identified security or management issues not addressed by the communications solution. Deployers should consider additional security measures, such as communications link and physical security as part of these solutions. They should also review the management issues to see if they are relevant to their deployment and would require mitigation. For new deployments, the deployment efforts should consider a path to addressing these issues as a part of their design activities. The solution does not by itself provide a fully secure implementation without additional work.

Issues

Issue	Severity	Description	Associated Standard	Associated Triple
Performance not fully defined (medium)	Medium	The performance rules are not fully defined for this information flow.	(None)	(All)
Secure data access not provided	Medium	The solution does not define rules on how the application entity authenticates requests to accept or provide data.	(None)	(All)
Not a standard (minor)	Low	The document is publicly available and widely used but it is not currently a formal standard.	GTFS Realtime	(All)

Supports Interfaces

Source	Destination	Flow
BCRTA Transit System Dispatch	City and County Traffic Control Center	emergency transit schedule information
BCRTA Transit System Dispatch	Hamilton County Signal Operations	emergency transit schedule information
BCRTA Transit System Dispatch	Media Outlets	transit incident information
BCRTA Transit System Dispatch	Media Outlets	transit information for media
BCRTA Transit System Dispatch	Regional 911 Call Centers	emergency transit schedule information
CTC Transit Dispatch	Cincinnati Traffic Control Center	emergency transit schedule information
CTC Transit Dispatch	City and County Traffic Control Center	emergency transit schedule information
CTC Transit Dispatch	Hamilton County Signal Operations	emergency transit schedule information
CTC Transit Dispatch	Media Outlets	transit incident information
CTC Transit Dispatch	Media Outlets	transit information for media
CTC Transit Dispatch	Regional 911 Call Centers	emergency transit schedule information
Local Transit Systems	City and County Public Information Systems	emergency transit schedule information
Local Transit Systems	City and County Traffic Control Center	emergency transit schedule information
Local Transit Systems	Hamilton County Signal Operations	emergency transit schedule information
Local Transit Systems	INDOT Traffic Operations Center	emergency transit schedule information
Local Transit Systems	Media Outlets	transit incident information
Local Transit Systems	Media Outlets	transit information for media
Local Transit Systems	Regional 911 Call Centers	emergency transit schedule information
Local Transit Systems	Regional Operations Center	emergency transit schedule information
Local Transit Systems	TRIMARC (KYTC)	emergency transit schedule information
SORTA Riverfront Transit Center	Cincinnati Public Information Office	transit incident information
SORTA Riverfront Transit Center	Media Outlets	transit incident information
SORTA Riverfront Transit Center	Regional Operations Center	emergency transit schedule information
SORTA Riverfront Transit Center	SORTA Traveler Information System	transit incident information
SORTA Transit Dispatch Center	Cincinnati Public Information Office	emergency transit schedule information
SORTA Transit Dispatch Center	Cincinnati Public Information Office	transit schedule adherence information
SORTA Transit Dispatch Center	Cincinnati Traffic Control Center	emergency transit schedule information
SORTA Transit Dispatch Center	Media Outlets	transit incident information
SORTA Transit Dispatch Center	Media Outlets	transit information for media
SORTA Transit Dispatch Center	ODOT / KYTC Traveler Information System	transit incident information
SORTA Transit Dispatch Center	Regional Operations Center	emergency transit schedule information
SORTA Transit Dispatch Center	SORTA Traveler Information System	emergency transit schedule information
TANK Transit System Dispatch	City and County Public Information Systems	emergency transit schedule information
TANK Transit System Dispatch	City and County Public Information Systems	transit schedule adherence information
TANK Transit System Dispatch	City and County Traffic Control Center	emergency transit schedule information
TANK Transit System Dispatch	CVG Airport Parking Management Systems	transit schedule adherence information
TANK Transit System Dispatch	Media Outlets	transit incident information
TANK Transit System Dispatch	Media Outlets	transit information for media
TANK Transit System Dispatch	ODOT / KYTC Traveler Information System	transit incident information
TANK Transit System Dispatch	Regional 911 Call Centers	emergency transit schedule information
TANK Transit System Dispatch	TANK Traveler Information System	emergency transit schedule information
TANK Transit System Dispatch	TRIMARC (KYTC)	emergency transit schedule information
University of Cincinnati Shuttle Dispatch	Cincinnati Public Information Office	transit schedule adherence information
University of Cincinnati Shuttle Dispatch	Private Traveler Information Systems	transit schedule adherence information