Private company

Quester Tangent Corporation

North American supplier of train electronics and software

Quester Tangent Corporation (QTC) is an independent North American supplier of train electronics and software for the rail transit industry. Quester Tangent designs, develops and manufactures vehicle monitoring hardware and software for the global rail transit industry, including monitoring and control products, on-train displays, communication and data networks, and passenger information systems.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1983Founded1

Quester Tangent Corporation (QTC) is an independent North American supplier of train electronics and software for the rail transit industry. Quester Tangent designs, develops and manufactures vehicle monitoring hardware and software for the global rail transit industry, including monitoring and control products, on-train displays, communication and data networks, and passenger information systems.2

Products and brands

  • urban rail transit

Listed on Wikidata.1

Timeline

  1. 1983Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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  2. 2