Pittsburgh Regional Transit logo

Welcome to PRT TrueTime


Subject: Abbreviation Definitions

Affected Service:System-Wide
ADD'L - Additional
BIS- Back In Service (Previously Cancelled Trip Restored)
DISC-Discontinued
DLY – Delay / Delayed
DTR – Detoured
FS- Farside Bus Stop
IB – Inbound Trip
NS- Nearside Bus Stop
OB – Outbound Trip
OS – Out of Service (Trip Cancelled)
SC- Scheduled Time of Arrival (No Tracking Available)
TT- TrueTime (Tracking Scheduled Bus Arrival Time)

- Back
- Refresh
- Home


Copyright 2026 Pittsburgh Regional Transit
Contact Us