Terms and acronyms commonly used in Transportation Planning are defined below.

A thru C | Cv thru F | G thru J | K thru M | N thru R | S thru Z

N thru R
• NEPA – National Environmental Policy Act
• NHI – National Highway Institute
  
• NHS – National Highway System (Federal funding category & established system of roads)
• NBIP – National Bridge Inspection Program
  
• NCHRP – National Cooperative Highway Research Program
  
• NHTSA – National Highway Traffic Safety Administration
  
• OJJDP – Office of Juvenile Justice and Delinquency Prevention
• PCAG – Planning Computer Advisory Group
  
• PMS – Pavement Management System
  
• PSE – Pavement Structural Evaluation
  
• QC/QA – Quality Control/Quality Assurance
  
• RCRS – Road Condition Reporting System
  
• RWIS – Road Weather Information System