PSD – Platform Screen Door
EEMS – Electronic Engine Management System
LRT – Light Rail Transit
ETS – Electric Train Supply
CAWS – Continuous Automatic Warning System
AGT – Automated Guideway Transit
EoTT – End of Train Telemetry
OLE – Overhead Line Equipment
DPC – Distributed Power Control
UIC – Union internationale des chemins de fer (in French) / International Union of Railways
RRT – Rapid Rail Transit
EUI – Electronically controlled Unit Injector
SBU – Sense and Braking Unit
AWS – Automatic Warning System
NGTC – Next Generation Train Control
ECU – Engine Control Unit
BCP – Brake Cylinder Pressure
ATS – Automatic Train Stop
ROC – Rail Operating Centre
PSB – Power Signal Box
DVT – Driving Van Trailer
HTD – Head of Train Device
BCU – Brake Control Unit
MRT – Mass Rapid Transit
GSM-R – Global System for Mobile Communications – Railway
GPS – Global Positioning System
SPAD – Signal Passed at Danger
GUI – Graphical User Interface
TBC – Train Brake Command
REC – Railway Emergency Call
SPTO – Single Person Train Operation
ADU – Aspect Display Unit
RFT – Road Freight Transport
DTC – Direct Traffic Control
SLW – Single Line Working
GRT – Group Rapid Transit
DEMU – Diesel Electric Multiple Unit
PRT – Personal Rapid Transit
IBJ – Insulated Block Joint
CBTC – Communication Based Train Control
TPO – Travelling Post Office
EAB – Electronic Air Brake
RTS – Rapid Transit System
AAR – Association of American Railroads
TPWS – Train Protection and Warning Systems
DPU – Distributed Power Unit
OHW – Overhead Wiring
AUR – African Union of Railways
HEP – Head End Power
ERTMS – European Rail Traffic Management System
