Standards Resources

ng TMDD ConCps Walkthrough Plan

ngTMDD ConOpsCommentResolutionReport-2023-06-02[6727]

ngTMDDConOps-2023-05-31

CWZ_Standard_ConOps_Requirement_draft_v00.03_20230530

CWZ_Standard_ConOps_Comment_Resolution_Report-Draft v01-230528

CWZ_Standard_Requirements_WalkthroughPlan-Draft v02-230523

ATC 5401 v02B.45 has been accepted as a Jointly Approved Standard of the ATC Joint Committee (JC). The standard is complete with user needs, software requirements and a detailed specification of the interface. The previous Application Programming Interface (API) Standard for the Advanced Transportation Controller (ATC) Version 02A (v02A.36) was published as a Joint Standard of AASHTO, ITE and NEMA on July 29, 2020. The primary need an amendment was to include the serial bus communications for the ATC Cabinet defined by the Advanced Transportation Controller (ATC) Cabinet Standard Version 02. ATC 5401 v02B has the following changes: a) Communications frames added to support the ATC Cabinet (see Tables 2 and 3 in the standard) b) Diagrams in Sections 1 and 2 were updated c) Document references were updated d) Various other editorial improvements made.

CWZ_Standard_ConOps_draft_v00.01_230222

ATC 5401 v02B is an update to the previously approved ATC 5401 v02A. The standard is designated as ATC 5401 v02B (as published) and should be cited as ATC 5401 v02B to distinguish it from previous publications of the standard. Anyone using ATC 5401 v02B should seek information about the version number that is of interest to them in any given circumstance. Conforming software based on later, or higher, version numbers may not be compatible with conforming software based on earlier, or lower, version numbers.

CWZ ConOpsWalkthroughPlan-draftv01-230209

CWZ Standard SEMP Draft v1.00

The Institute of Transportation Engineers, on behalf of the Roadside Unit (RSU) Standardization Working Group is pleased to announce the publication of RSU Standard Version 1.0, also known as Connected Transportation Interoperability (CTI 4001 v01.00). The RSU Standard is a non-proprietary, technology neutral, industry-based consensus standard for roadside units, based on stakeholder inputs and existing resources such as the RSU Specification Version 4.1, NEMA's TS-10 Connected Vehicle Infrastructure – Roadside Equipment Standard as well as lessons learned from pilot deployments. The RSU Working Group accomplished this effort with broad stakeholder representation including standards development organizations (SDOs), infrastructure owner operators (IOOs), automotive original equipment manufacturers (OEMs) and suppliers, infrastructure equipment vendors, security specialists, Intelligent Transportation Systems (ITS) integrators, and end-users of data and services

The Institute of Transportation Engineers (ITE), on behalf of the Connected Intersections Project Committee, is pleased to announce the publication of the Connected Intersections (CI) Implementation Guide, known also as Connected Transportation Interoperability (CTI 4501 v01.00). This initial version of the CI Implementation Guide provides a detailed interface specification that can be used by the ITS community to deploy a nationally interoperable, openly available broadcast providing traffic Signal Phase and Timing and associated required mapping ("MAP") information that can be received by connected vehicles and other interested participants in the transportation system. This information enables applications such as Red Light Violation Warning and others that can increase both safety and efficiency. The Connected Intersections Project Committee accomplished this effort with broad stakeholder representation including standards development organizations , Intelligent Transportation Systems (ITS) infrastructure owner operators (IOOs), automotive original equipment manufacturers and suppliers, infrastructure equipment vendors, security specialists, ITS integrators, and end-users of data and services.

The Connected Transportation Interoperability (CTI) family of standards are a series of documents that are jointly developed by stakeholders across the connected vehicle spectrum, including infrastructure owner operators (IOOs), the automotive industries, device manufacturers, mobility data providers, and systems integrators. The documents in the CTI family are sponsored by USDOT and approved and maintained by the following Standards Development Organizations (SDOs), including AASHTO, ITE, NEMA and SAE International and includes standards and technical reports that provide guidance to develop and maintain an interoperable connected vehicle environment. This CI Implementation Guide address the ambiguities and gaps identified by early deployers and provides guidance to generate messages and develop applications for signalized intersections that are interoperable across the United States, especially for the automated transportation systems. This document focuses on harmonizing the existing signal phase and timing (SPaT) messages deployed, using the USDOT sponsored Cooperative Automated Transportation Clarifications for Consistent Implementations (CCIs) To Ensure National Interoperability Connected Signalized Intersections as a starting point.

The Connected Transportation Interoperability (CTI) family of standards are a series of documents that are jointly developed by stakeholders across the connected vehicle spectrum, including infrastructure owner operators (IOOs), the automotive industries, device manufacturers, mobility data providers, and systems integrators. Sponsored by USDOT and approved and maintained by the following Standards Development Organizations (SDOs), including AASHTO, ITE, NEMA and SAE International. Documents in the CTI family includes standards and technical reports that provide guidance to develop and maintain an interoperable connected vehicle environment. This Roadside Unit (RSU) Standard v01 supersedes USDOT's Dedicated Short-Range Communications Roadside Unit Specifications v4.1. This RSU Standard v01 was developed by engaging with stakeholders representing the industry at large, including but not limited to infrastructure owner operators, automobile original equipment manufacturers (OEMs), RSU manufacturers, and the end users of data and services. This document establishes a non-proprietary, communications-agnostic, industry-based consensus RSU Standard

ATC 5401 v02A is an update to the previously approved ATC 5401 v02.17. The standard is designated as ATC 5401 v02A (as published) and should be cited as ATC 5401 v02A to distinguish it from previous publications of the standard. Anyone using ATC 5401 v02A should seek information about the version number that is of interest to them in any given circumstance. Conforming software based on later, or higher, version numbers may not be compatible with conforming software based on earlier, or lower, version numbers.

This is a connected intersection-ready Advanced Transportation Controller (ATC) Standard family developed by AASHTO, ITE, and NEMA