US: SAE Signal Preemption - WAVE TCP

Description

This solution is used within the U.S.. It combines standards associated with US: SAE Signal Preemption with those for V–X: WAVE TCP. The US: SAE Signal Preemption standards include upper–layer standards required to implement signal preemption and priority information flows. The V–X: WAVE TCP standards include lower–layer standards that support connection–oriented vehicle–to–any communications within ~300m using the Transmission Control Protocol (TCP) over Internet Protocol version 6 (IPv6) over IEEE WAVE in the 5.9GHz spectrum.

Includes Standards

LevelDocNumFullNameDescription
MgmtAddressed ElsewhereAddressed Elsewhere in StackThe services related to this portion of the stack are defined in the other standards listed for this solution.
SecurityIEEE 1609.2IEEE Standard for Wireless Access in Vehicular Environments – Security Services for Applications and Management MessagesThis standard defines secure message formats and processing for use by Wireless Access in Vehicular Environments (WAVE) devices, including methods to secure WAVE management messages and methods to secure application messages. It also describes administrative functions necessary to support the core security functions.
SecurityIEEE 1609.2aIEEE 1609.2a–2017 – IEEE Standard for Wireless Access in Vehicular Environments––Security Services for Applications and Management Messages – Amendment 1This standard defines secure message formats and processing for use by Wireless Access in Vehicular Environments (WAVE) devices, including methods to secure WAVE management messages and methods to secure application messages. It also describes administrative functions necessary to support the core security functions.
SecurityIEEE 1609.2bIEEE Standard for Wireless Access in Vehicular Environments––Security Services for Applications and Management Messages – Amendment 2––PDU Functional Types and Encryption Key ManagementThis standard defines secure message formats and processing for use by Wireless Access in Vehicular Environments (WAVE) devices, including methods to secure WAVE management messages and methods to secure application messages. It also describes administrative functions necessary to support the core security functions.
ITS Application EntityCEN ISO 19091Intelligent transport systems –– Cooperative ITS –– Using V2I and I2V communications for applications related to signalized intersectionsThis technical specification defines messages and related data structures and data elements for the following exchanges between roadside equipment and vehicles: 1) Definition of the SPaT (signal phase and timing) message transmitted from a traffic controller that describes the state of the signals, signal timing as necessary to support the applications identified herein; 2) definition of the MAP message (which include the definition of motorized lane, vehicles, busses, trams, bicycle, pedestrian crosswalks, etc.); and 3) definition of the messages (SRM, SSM) to be exchanged between an intersection traffic controller and approaching vehicles to support priority treatment as might be expected for emergency response , freight transport, and public transport vehicles to improve safety.
ITS Application EntitySAE J2735Dedicated Short Range Communications (DSRC) Message Set Dictionary (TM)This standard defines the data and messages for use in DSRC (i.e., V2V, V2I, and V2D) applications. The SAE J2945 series defines additional requirements on how to use these messages.
ITS Application EntitySAE J2945/BRecommended Practices for Signalized Intersection ApplicationsThis document provides guidance on usage of SAE J2735 and other related information for signalized intersection applications. The document focuses on how to use SPaT and MAP messages to support signalized–intersection applications. In general, implementation guidance is necessary to achieve interoperability by addressing the requirements for the options for both over the air dialogs and message contents, and to support larger intersection maps This document also addresses using Signal Request & Signal Status messages corresponding to vehicle functionality and approaches to traffic signal priority/pre–emption (TSP), including three different methods for implementing TSP over the air. The project is complementary to the connected intersections project being performed by ITE.
FacilitiesSAE J2735Dedicated Short Range Communications (DSRC) Message Set Dictionary (TM)This standard defines the data and messages for use in DSRC (i.e., V2V, V2I, and V2D) applications. The SAE J2945 series defines additional requirements on how to use these messages.
FacilitiesSAE J2945Dedicated Short Range Communication (DSRC) Systems Engineering Process Guidance for J2945/x Documents and Common Design ConceptsThis standard defines cross–cutting material which applies to the J2945/x series including generic DSRC interface requirements and guidance on Systems Engineering (SE) content.
TransNetIETF RFC 2460Internet Protocol, Version 6 (IPv6) SpecificationThis standard (RFC) specifies version 6 of the Internet Protocol (IPv6), also sometimes referred to as IP Next Generation or IPng.
TransNetIETF RFC 4291IP Version 6 Addressing ArchitectureThis standard (RFC) defines the addressing architecture of the IP Version 6 (IPv6) protocol. It includes the IPv6 addressing model, text representations of IPv6 addresses, definition of IPv6 unicast addresses, anycast addresses, and multicast addresses, and an IPv6 node's required addresses.
TransNetIETF RFC 4861Neighbor Discovery for IP version 6 (IPv6)This standard (RFC) specifies the Neighbor Discovery protocol for IP Version 6. IPv6 nodes on the same link use Neighbor Discovery to discover each other's presence, to determine each other's link–layer addresses, to find routers, and to maintain reachability information about the paths to active neighbors.
TransNetIETF RFC 4862IPv6 Stateless Address AutoconfigurationThis standard (RFC) specifies the steps a host takes in deciding how to autoconfigure its interfaces in IP version 6. The autoconfiguration process includes generating a link–local address, generating global addresses via stateless address autoconfiguration, and the Duplicate Address Detection procedure to verify the uniqueness of the addresses on a link.
TransNetIETF RFC 793Transmission Control ProtocolThis standard (RFC) defines the main connection–oriented Transport Layer protocol used on Internet–based networks.
TransNetIEEE 1609.3IEEE Standard for Wireless Access in Vehicular Environments (WAVE) – Networking ServicesThis standard defines the network and transport layer options for the WAVE environment. The standard defines three options: a bandwidth efficient single–hop solution known as WSMP, UDP/IP, and TCP/IP. It has been harmonized with ISO FNTP and FSAP – a common message format specified in ISO 16460.
AccessIEEE 1609.4IEEE Draft Standard for Wireless Access in Vehicular Environments – Multi–Channel OperationThis standard primarily defines the data link layer of the WAVE communications stack.
AccessIEEE 802.11IEEE Draft Standard for Information technology––Telecommunications and information exchange between systems Local and metropolitan area networks––Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) SpecificatioThis standard defines the physical and data link layers for wireless Ethernet, including WiFi and DSRC.
AccessISO/IEC 8802–2IEEE Standard for Information technology –– Telecommunications and information exchange between systems––Local and metropolitan area networks –– Specific requirements –– Part 2: Logical Link ControlISO/IEC 8802–2 describes the logical link control (LLC) sublayer, which constitutes the top sublayer in the data link layer of the ISO 8802 Local Area Network Protocol (also known as IEEE 802.2).

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

IssueSeverityDescriptionAssociated StandardAssociated Triple
Data not defined in standard formatLowThe definition of data concepts should conform to ISO 14817–1 to promote reuse among ITS.SAE J2735 DSRC Message Set(All)
Guidance document under developmentLowThis recommended practice on how to use the related standards is still under development but is not seen as strictly necessary to begin deployment of equipment.SAE J2945/B Signal Intersection Applications(All)
Not a standard (minor)LowThe document is publicly available and widely used but it is not currently a formal standard.ISO 19091 V2I for signalized intersections(All)

Supports Interfaces

SourceDestinationFlow
City of Alcoa Fire VehiclesCity of Alcoa Traffic Signalslocal signal preemption request
City of Alcoa Fire VehiclesCity of Maryville Traffic Signalslocal signal preemption request
City of Knoxville Fire VehiclesCity of Knoxville Traffic Signalslocal signal preemption request
City of Maryville Fire VehiclesCity of Alcoa Traffic Signalslocal signal preemption request
City of Maryville Fire VehiclesCity of Maryville Traffic Signalslocal signal preemption request
City of Sevierville Fire VehiclesCity of Sevierville Traffic Signalslocal signal preemption request
KAT Fixed Route VehiclesCity of Knoxville Traffic Signalslocal signal priority request
Municipal Public Safety VehiclesCity of Lenoir City Traffic Signalslocal signal preemption request
Municipal Public Safety VehiclesCity of Oak Ridge Traffic Signalslocal signal preemption request
Municipal Public Safety VehiclesTown of Farragut Traffic Signalslocal signal preemption request
Rural Metro Fire VehiclesKnox County Traffic Signalslocal signal preemption request