Acronyms

PAC: Payment Administration Center
PC: Personal Computer
PCA: Pre-crash Actions
PCB: Professional Capacity Building
PCS: Personal Communications System
PDA: Personal Digital Assistant
PDF: Portable Document Format
PDU: Protocol Data Unit
PER: Packet Error Rate
PHY: Physical
PIAS: Personal Information Access Subsystem (legacy National ITS Architecture)
PID: Personal Information Device
PIF: Public Interest Finding
PII: Personally Identifiable Information
PIN: Personal Identification Number
PKI: Public Key Infrastructure
PM: Performance Monitoring, Particulate Matter
PMS: Parking Management Subsystem (legacy National ITS Architecture)
PNG: Portable Network Graphics
POC: Proof of Concept
PPG: Privacy Protection Gateway
PRL: Protocol Requirements List
PSAP: Public Safety Answering Point
PSID: Provider Service Identifier
PSID: Provider Service Identifier
PSPEC: Process Specification
PTI: Planning Time Index
PTS: Positive Train Separation or Public Travel Security
PTVCW: Pedestrian in Signalized Crosswalk Warning