Italferr S.p.A. Signal Engineer Interview Questions and Answers for Experienced

Computer Based Interlocking is a system that uses computers to control railway signals and points.

• Uses computer technology to control railway signals and points

• Replaces traditional mechanical interlocking systems

• Provides more flexibility and reliability in railway operations

• Can be customized to meet specific railway requirements

• Examples include Siemens' Trackguard and Alstom's Smartlock

Axle counter is a train detection system that uses sensors to detect the presence of a train on a track section.

• Axle counter system uses sensors to detect the presence of a train on a track section

• It works on the principle of counting the number of axles that pass over the sensors

• SOD (Start of Detection) is the point where the sensors start detecting the train

• The system uses two sets of sensors, one at the SOD and the ...read more

ATO and ATS are safety systems on-board trains that ensure safe and efficient operation.

• ATO (Automatic Train Operation) is a system that controls the train's speed and acceleration, as well as its braking and stopping.

• ATS (Automatic Train Supervision) is a system that monitors the train's position and speed, and communicates with the ATO system to ensure safe operation.

• ATO and ATS work together to ensure that trains op...read more

Relays used for interface include electromechanical, solid-state, and reed relays.

• Electromechanical relays use a physical switch to open and close circuits.

• Solid-state relays use semiconductors to switch circuits.

• Reed relays use a magnetic field to switch circuits.

• Other types include mercury-wetted and hybrid relays.

• Relays are commonly used for interfacing between different voltage or current levels.

• Examples of applica...read more