KB Signaling Inc.

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KB Signaling, Inc.
A rack of six AFTC5 train control modules mounted side by side in an equipment cabinet. Each module features labeled indicator lights for track circuit and communication status, USB and Ethernet ports, application key slots, and a program connector. Several units have yellow and green LEDs illuminated. Red-handled circuit breakers are visible at the bottom of each module.
The AFTC5 is a jointless audio frequency track circuit that interfaces between interlocking systems and trackside equipment. It transmits and receives vital rate-coded carrier...
June 2, 2026
KB Signaling Inc.
The image shows the AFCT5, a jointless audio frequency track circuit.
AFTC5 is a highly configurable, jointless Audio Frequency Track Circuit.
Oct. 14, 2025
KB Signaling Inc.
The image displays the iVPI device.
The Integrated Vital Processing Interlocking (iVPI) features an innovative, modular design supporting a wide range of scalability and interconnectivity options.
Oct. 14, 2025
KB Signaling Inc.
The image shows the EC6 track circuit.
Electro Code 6 (EC6) is the world’s first track circuit that does not require adjustments.
Oct. 14, 2025

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