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Standard

Cooperative Perception System

2018-09-18
WIP
J2945/8
This document provides a description for a V2X-capable device such as a vehicle, an infrastructure or a portable device to broadcast its perception information of other road users/objects nearby, to realize cooperative perception sharing, and to improve the perception performance of other V2X-capable devices/systems. #11;The concept of such perception sharing system can be: The host system is capable of transmitting and receiving V2X messages such as BSM and PSM messages. In the meanwhile the host system is capable of detecting nearby road users/objects such as foreign objects, vehicles and pedestrians. The host system can determine whether the detected objects are V2X enabled or not, and translate the detected objects to messages such as a new cooperative perception message, and/or an extension of messages such as BSMs/PSMs, and broadcast these messages.
Standard

Positioning Enhancements for V2X systems

2018-09-17
WIP
J2945/7
This WIP delivers a technical report with the intent of leveraging existing specifications and reports for V2X positioning enhancements, e.g.SAE6857 Requirements for a Terrestrial Based Positioning, Navigation, and Timing (PNT) System. Specifically, this WIP will extend beyond the existing GNSS requirements with additional complimentary positioning and augmentation capability requirements. This work will study the enhancement of the existing specifications in J2945/x and other ITS/V2X standards.   The first step in this work will be to survey similar work within SAE and/or other standards development organizations to adopt and collaborate with their efforts.
Standard

Service Specific Permissions and Security Guidelines for Connected Vehicle Applications

2018-05-11
WIP
J2945/5
The SAE J2945/x series of standards define a set of applications that among other things use messages from the J2735 message set dictionary. Authenticity and integrity of the communications for these applications are ensured using digital signatures and IEEE 1609.2 digital certificates, which also indicate the permissions of the senders using Provider Service Identifiers (PSID) and Service Specific Permissions (SSPs). The PSID is associated with an application specification that unambiguously describes how to build interoperable instances of that application. The SSP defined in that application specification is the means by which that application can express state dependent permissions to engage is particular subsets of the activities specified therein.
Standard

Dedicated Short Range Communication (DSRC) Systems Engineering Process Guidance for SAE J2945/X Documents and Common Design Concepts™

2017-12-07
CURRENT
J2945_201712
This SAE Standard serves as the guidance document for the J2945/x family of standards as illustrated in Figure 7. It contains cross-cutting material which applies to the other J2945/x standards, including recommended practice for the use of Systems Engineering (SE) and generic DSRC interface requirements content. The scope for the DSRC system environment is to provide for the information exchange between a host vehicle and another DSRC enabled device, a device worn by or otherwise attached to a traveler, a roadside device, or a management center, to address safety, mobility, and environmental system needs. The audience for this document includes the technical teams of developers of the J2945/x documents and the implementers of the applications which are based on the J2945/x documents.
Standard

Requirements for V2I Weather Applications

2017-06-23
WIP
J2945/3
This effort will serve for the development of a new standard to define requirements to support V2I weather applications interface in a connected vehicle environment. USDOT has provided funding for this standard and has requested that the Technical Committee (TC) approve using the Systems Engineering Process (SEP) as defined in J2945/0. Initial works in the field of road weather applications have been conducted by stakeholders from both the public and private sector. USDOT has offered a high level Concept of Operations for Road Weather Connected Vehicle and Automated Vehicle Applications to the TC as a basis for consideration to initiate the dialog for J2945/3. This Concept of Operations contains 8 Proposed Applications and 13 Operational Scenarios for the TC and V2I TF to consider. The TC also has material in SAE J3067 as a basis for its consideration. The focus is on information exchanges between the infrastructure and connected vehicles.
Standard

Vulnerable Road User Safety Message Minimum Performance Requirements

2017-03-21
CURRENT
J2945/9_201703
This document provides recommendations of safety message minimum performance requirements between a Vulnerable Road User (VRU) and a vehicle. It addresses the transmission of Personal Safety Messages (PSM) from road user devices carried by pedestrians, bicycle riders and public safety personnel, to provide driver and vehicle system awareness and potentially offer safety alerts to VRUs. This document includes the recommendation of standards profiles, function descriptions and minimum performance requirements for transmitting the SAE J2735-defined PSM [1] over a Dedicated Short Range Communications (DSRC) Wireless communication link as defined in the Institute of Electrical and Electronics Engineers (IEEE) 1609 and the IEEE 802.11 Standards [[1]]-[5]].
Standard

DSRC Messages for Traveler Information and Basic Information Delivery

2016-09-30
WIP
J2945/4
This standard will serve to re-work and extend the existing SAE J2735 message elements in order to include additional travel and roadway information from the infrastructure to enhance safety awareness and promote the exchange and transfer of such messages types between vehicles and the infrastructure (V2I). Fundamentally this document will outline the needs and detail the system requirements to support a variety of use cases linking to the J2735 effort as other J2945/x documents do. The initial scope will be to revise the structure of the existing “TIM” message to reflect the lessons learned from the various deployment activities such as the BIM developed by an automotive OEM consortium. The objective is to improve the general functionality of the message set in key areas such as message linking, content segmentation, message forwarding within a security framework, and new application areas beyond what is enabled by the TIM.
Standard

Traffic Probe Use and Operation

2016-07-27
WIP
J2945/12
This recommended practice will provide guidance on Traffic Probe Use data to manufacturers that are either Transportation System Management (TSM) core or aligned entities. The recommended practice originates from prior work of the Society of Automotive Engineers (SAE) Dedicated Short Range Communication (DSRC) Technical Committee, as well as existing practices implemented by industry, academia and government. The recommended practice informs manufacturers and practitioners of message use and operation within an automated collection system involved in the orchestration of safe, efficient, and reliable movement of people and goods. The recommended practice for Traffic Probe Use and Operation will support practitioners through the definition of message structure, on-board processing and storage requirements, the operational preservation of vehicle anonymity, and message event management criteria.
Standard

J2945/11 Recommended Practices for Signal Preemption Message Development

2016-04-05
WIP
J2945/11
This effort will be a recommend best practices document outlining how to use the J2735 Signal Request and Signal Status messages in the standard relating to signalized systems status. It primary content will deal with explaining and demonstrating by small working examples how these messages are constructed and used to meet operational needs of user. Particular attention will be paid to the interaction between the SAE work and the relevant NTCIP standards used in the signal control system. [The SAE J2735 document, being a data dictionary and not a guide, allowed only a brief summary of this sort of material.] The intended audience for this effort are those developing new deployment using these messages in connection with intersection safety applications. This will be a recommend practice, not a standard.
Standard

J2945/10 Recommended Practices for MAP/SPaT Message Development

2016-04-05
WIP
J2945/10
This effort will be a recommend best practices document outlining how to use the current MAP and SPAT message content found in the recently published J2735. It’s primary content will deal with better explaining and demonstrating by small working examples of how suitable messages are constructed and used to meet operational needs of user. [The SAE J2735 document, being a data dictionary and not a guide, allowed only a briefs summary of this sort of material.] The intended audience for this effort are those developing new deployment using these messages in connection with intersection safety applications. This will be a recommend practice, not a standard.
Standard

Dedicated Short Range Communications (DSRC) Message Set Dictionary™ Set

2016-03-30
CURRENT
J2735SET_201603
This Abstract Syntax Notation (ASN.1) File is the precise source code used for SAE International Standard J2735. As part of an international treaty, all US ITS standards are expressed in "ASN.1 syntax". ASN.1 Syntax is used to define the messages or "ASN specifications". Using the ASN.1 specification, a compiler tool produces the ASN library which will then be used to produce encodings (The J2735 message set uses UPER encoding). The library is a set of many separate files that collectively implement the encoding and decoding of the standard. The library is then used by any application (along with the additional logic of that application) to manage the messages. The chosen ASN tool is used to produce a new copy of the library when changes are made and it is then linked to the final application being developed. The ASN library manages many of the details associated with ASN syntax, allowing for subtle manipulation to make the best advantage of the encoding style.
Standard

Dedicated Short Range Communications (DSRC) Message Set Dictionary™ ASN file

2016-03-30
CURRENT
J2735ASN_201603
This Abstract Syntax Notation (ASN.1) File is the precise source code used for SAE International Standard J2735. As part of an international treaty, all US ITS standards are expressed in "ASN.1 syntax". ASN.1 Syntax is used to define the messages or "ASN specifications". Using the ASN.1 specification, a compiler tool produces the ASN library which will then be used to produce encodings (The J2735 message set uses UPER encoding). The library is a set of many separate files that collectively implement the encoding and decoding of the standard. The library is then used by any application (along with the additional logic of that application) to manage the messages. The chosen ASN tool is used to produce a new copy of the library when changes are made and it is then linked to the final application being developed. The ASN library manages many of the details associated with ASN syntax, allowing for subtle manipulation to make the best advantage of the encoding style.
Standard

On-Board System Requirements for V2V Safety Communications

2016-03-30
CURRENT
J2945/1_201603
This standard specifies the system requirements for an on-board vehicle-to-vehicle (V2V) safety communications system for light vehicles1, including standards profiles, functional requirements, and performance requirements. The system is capable of transmitting and receiving the Society of Automotive Engineers (SAE) J2735-defined Basic Safety Message (BSM) [1] over a Dedicated Short Range Communications (DSRC) wireless communications link as defined in the Institute of Electrical and Electronics Engineers (IEEE) 1609 suite and IEEE 802.11 standards [2] – [6].
Standard

Dedicated Short Range Communications (DSRC) Message Set Dictionary

2016-03-30
CURRENT
J2735_201603
This SAE Standard specifies a message set, and its data frames and data elements, specifically for use by applications intended to utilize the 5.9 GHz Dedicated Short Range Communications for Wireless Access in Vehicular Environments (DSRC/WAVE, referenced in this document simply as “DSRC”) communications systems. Although the scope of this Standard is focused on DSRC, this message set, and its data frames and data elements, have been designed, to the extent possible, to be of potential use for applications that may be deployed in conjunction with other wireless communications technologies as well. This Standard therefore specifies the definitive message structure and provides sufficient background information to allow readers to properly interpret the message definitions from the point of view of an application developer implementing the messages according to the DSRC Standards.
Standard

Dedicated Short Range Communications (DSRC) Message Set Dictionary

2016-01-19
HISTORICAL
J2735_201601
This SAE Standard specifies a message set, and its data frames and data elements, specifically for use by applications intended to utilize the 5.9 GHz Dedicated Short Range Communications for Wireless Access in Vehicular Environments (DSRC/WAVE, referenced in this document simply as “DSRC”) communications systems. Although the scope of this Standard is focused on DSRC, this message set, and its data frames and data elements, have been designed, to the extent possible, to be of potential use for applications that may be deployed in conjunction with other wireless communications technologies as well. This Standard therefore specifies the definitive message structure and provides sufficient background information to allow readers to properly interpret the message definitions from the point of view of an application developer implementing the messages according to the DSRC Standards.
Standard

Dedicated Short Range Communications (DSRC) Message Set Dictionary

2015-09-02
HISTORICAL
J2735_201509
This SAE Standard specifies a message set, and its data frames and data elements specifically for use by applications intended to utilize the 5.9 GHz Dedicated Short Range Communications for Wireless Access in Vehicular Environments (DSRC/WAVE, referenced in this document simply as “DSRC”), communications systems. Although the scope of this Standard is focused on DSRC, this message set, and its data frames and data elements have been designed, to the extent possible, to also be of potential use for applications that may be deployed in conjunction with other wireless communications technologies. This Standard therefore specifies the definitive message structure and provides sufficient background information to allow readers to properly interpret the message definitions from the point of view of an application developer implementing the messages according to the DSRC Standards.
Standard

DSRC Requirements for V2V Safety Awareness

2015-03-24
WIP
J2945/2
DSRC interface requirements for V2V Safety Awareness applications, including detailed Systems Engineering documentation (needs and requirements mapped to appropriate message exchanges)
Standard

Performance Requirements for Cooperative Adaptive Cruise Control and Platooning

2015-01-27
WIP
J2945/6
This document provides recommendations for enhancements to ACC by the addition of wireless communication from relevant vehicles (V2V) and/or the infrastructure (I2V) to augment the ACC active sensing capability. The CACC system operates under driver responsibility and supervision and is limited to the following: • does only longitudinal control of the vehicle. • uses time gap control strategy similar to ACC. Motor vehicles covered in the scope of this document include light and heavy vehicles. The new message elements to realize CACC and platooning is part of the scope. The effort may result in identifying new message, data frames and data elements in SAE J2735. The initial release covers definitions for CACC and platooning and requirements for CACC, while a subsequent release will cover the platooning requirements.
Standard

Candidate Improvements to Dedicated Short Range Communications (DSRC) Message Set Dictionary [SAE J2735] Using Systems Engineering Methods

2014-08-26
CURRENT
J3067_201408
This document is not a standard, it is a candidate for a standard being submitted to SAE for their consideration as a comment to SAE J2735. The term SAE J2735 SE candidate is used within this document to refer to this submission. This document specifies dialogs, messages, and the data frames and data elements that make up the messages specifically for use by applications intended to utilize the 5.9 GHz Dedicated Short Range Communications for Wireless Access in Vehicular Environments (DSRC/WAVE, referenced in this document simply as “DSRC"), communications systems. Although the scope of this Standard is focused on DSRC, these dialogs, messages, data frames and data elements have been designed, to the extent possible, to be of use for applications that may be deployed in conjunction with other wireless communications technologies.
Standard

ITIS Phrase Lists (International Traveler Information Systems)

2009-11-19
CURRENT
J2540/2_200911
This standard provides a table of textual messages meeting the requirements for expressing "International Traveler Information Systems" (ITIS) phrases commonly used in the ITS industry. The tables provided herein follow the rules of SAE J2540 and therefore allow a local representation in various different languages, media expressions etc… to allow true international use of these phrases. The phrases are predominantly intended for use in the description of traffic related events of interest to travelers and other traffic practitioners. Other phrases exit for other specific specialty areas of ITS, and all such phrases follow a set of encoding and decoding rules outlined in SAE J2540 to ensure that the use of these phrases in messages remain interoperable between disparate types of user equipment.
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