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The last thing home-office workers want to hear is that the Internet is down. For Denver’s RTD light rail system, someone saying the GPS is down is equally bad for the ears. And it’s happening a lot.
The light-rail system depends on GPS to run its Positive Train Control (PTC), which was installed back in 2015. With the GPS system fluttering, Denver’s RTD has suffered noticeable reductions in efficiency and performance. As a way to get around the GPS failures, Denver’s RTD has resorted to manual overrides of PTC safety features and has used human flaggers at grade crossings.
Denver’s RTD believes high-rise buildings in the area are effecting the GPS, and told the Federal Railroad Administration what it was doing to try to fix the problem back in 2018. Denver’s RTD told the FRA the agency was experiencing “a few PTC initialization issues each day due to poor reception of GPS signal.”
GPS signal repeaters were put in as a way to solve the signal problem in 2019, but it appears the step has not improved the PTC performance. RTD is still looking for a solution today.
For the latest news, go to http://www.rtands.com.
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The post GPS signal issues continue to affect RTD’s Positive Train Control in Denver appeared first on Railway Track and Structures.
This article first appeared on www.rtands.com
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