CVRIA Glossary

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National ITS Architecture

A common, established framework for developing integrated transportation systems. The National ITS Architecture is comprised of the logical architecture and the physical architecture, which satisfy a defined set of user service requirements. The National ITS Architecture is maintained by the United States Department of Transportation (USDOT). It will merge with the Connected Vehicle Reference Implementation Architecture (CVRIA) in 2016.

Node

A physical hardware Engineering Object that is a run-time computational resource and generally has at least memory and processing capability. Run-time application Engineering Objects, firmware, hardware subcomponents (such as radios and other specialized devices) reside on nodes. A Node has some well-understood, possibly rapidly moving, location. A Node may be composed of two or more (sub) Nodes.

Non-repudiation

The property whereby a protocal data unit (PDU) is constructed in such a way that the PDU sender cannot effectively deny having been the sender of that PDU; and the PDU receiver cannot effectively deny having received a particular PDU.

Now

One of the values for the Time Context Flow Characteristic. Data that is hyper current (relevant at the time of reporting for applications that require sub-second response). Also known as "Hyper Current" in some connected vehicle projects.