Terms in alphabetical order

Abandon

Abandoned baggage

Abatement code

Abnormality

Absolute block

Absolute block system

Absolute permissive block

Absolute Permissive Block (APB)

Absolute signal

Absolute stop signal

Absorption

ACC

Accatastabile

Accavallamento di respingenti

Accelerating device “air brake”

Accelerating power

Acceleration, not compensated

Accelerometer

Accept a train into a station

Acceptance