National ITS Architecture Acronyms

AASHTO: American Association of State Highway and Transportation Officials

ACE: Automated Commercial Environment

ADA: Americans with Disabilities Act

ADMS: Archived Data Management Subsystem

ADUS: Archived Data User Service

AFD: Architecture Flow Diagram

AHS: Automated Highway System

AID: Architecture Interconnect Diagram

ALB: Anti-Lock Brakes

ANSI: American National Standards Institute

APTA: American Public Transportation Association

APTS: Advanced Public Transportation System

ASTM: American Society for Testing and Materials

ATC: Automatic Train Control, Advanced Transportation Controller

ATIS: Advanced Traveler Information System

ATM: Asynchronous Transfer Mode

ATMS: Advanced Traffic Management System

ATS: Automatic Train Stop

AVCS: Advanced Vehicle Control System

AVI: Automated Vehicle Identification

AVL: Automated Vehicle Location

AVO: Automated Vehicle Operation