NYCT to test underground GPS

Written by Keith Barrow, Senior Editor, International Railway Journal
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IRJ at Wheel Detection Forum 2019, Vienna: New York City Transit (NYCT) has awarded Syntony Corp. a contract for the trial deployment of its SubWave underground GPS technology on the city’s subway network.

SubWave uses leaky coax cables to extend the reach of GPS positioning to underground infrastructure. The technology, which is already in use on the Stockholm metro network, enables accurate location of trains and other assets in tunnels.

Syntony says SubWave can be used for non-safety-critical applications but it expects to gain SIL (Safety Integrity Level) 2 certification for the technology this year and aims to achieve SIL 3 and SIL 4 certification within two years.

The trial deployment in New York will cover around a half-mile of tunnel.

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