N

NA

Not Applicable

NASA

National Aeronautics and Space Administration

National

Council on Systems Engineering [now INCOSE]

National ITS Architecture

A general framework for planning, defining, and integrating ITS. It was developed to support ITS implementations over a 20-year time period in urban, interurban, and rural environments across the country. The National ITS Architecture is available as a resource for any region and is maintained by the USDOT independently of any specific system design or region in the nation.

NCOSE

National Council on Systems Engineering [now INCOSE]

NDI

Non-Developmental Item

Needs assessment

An activity accomplished early in system development to ensure that the system will meet the most important needs of the project’s stakeholders, specifically that the needs are well understood, de-conflicted, and prioritized.

NEMA

National Electrical Manufacturers Association

NIST

National Institute of Standards and Technology

Non-conformance

The failure of a unit or product to conform to specified requirements.

NTCIP

National Transportation Communications for ITS Protocol