MTA Service Suspension 1-6 lines

Steve Burns/WCBS 880

Subway Meltdown: Computer Snafu Shut Down Nearly All Numbered Lines

July 22, 2019 - 2:05 pm

NEW YORK (WCBS 880) — The MTA is getting to the bottom of a “network communications issue” that suspended service on seven subway lines Friday evening.

In the midst of a sweltering hot evening commute, the MTA announced that nearly every number train – 1, 2, 3, 4, 5 and 6 – and all Grand Central-42 Street shuttle trains were suspended in both directions.

Nearly 3,000 riders were trapped on about 27 trains stuck in between stations. Some claim they waited at least 90-minutes until they were able to be safely brought into stations.

Transit President Andy Byford on Monday finally announced the issues stemmed from a computer problem.

“This was due to a software bug, not the same as I talked about before, so we are not talking about an erroneous single digit piece of code,” he explained.

On July 6, the code he mentioned let to a similar issues – nearly every number line in the city was shut down. In both instances, the culprit was a system known as “automatic train supervision.”

“There have been a number of what I would call fairly run of the mill incidents with ATS and in each case we have resolved them,” Byford reassured customers.

The transit president added that the MTA is trying to uncover any potential similar problems.