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

G thru J
• GAD – Geometric and Accident Data
• GIS – Geographic Information System
• GPS – Global Positioning System
• GSAPC – Governor's Substance Abuse and Prevention Council
• HAC – Highway Advisory Commission
  
• HPMS – Highway Performance Monitoring System
• HSP – Highway Safety Plan
  
• HYNE – Prefix to a battery of programs used on the mainframe to edit and update data
• IM – Interstate Maintenance (Federal funding category)
  
• ITE – Institute of Transportation Engineers
  
• ITS – Intelligent Transportation Systems
  
• JAD – Joint Application Design