Safety Recommendation from the NTSB

Safety Recommendation from the NTSB

The following comes from a letter sent by the Federal Transit Authority on behalf of National Transportation Safety Board:

The NTSB has concluded that Washington Metro's train control lacked adequate safety redundancy that would have included timely alerts of system failures and compensation for intermittent failures or other anomalies in train detection


Specifically, we are asking that all train operators that have train control systems capable of monitoring train movements determine whether their systems have adequate safety redundancy if losses in train detection occur. If a system is susceptible to single point failure, we urge you take corrective action immediately to add redundancy by evaluating track occupancy data on a real-time basis to automatically generate alerts and speed restrictions to prevent train collisions. 

View the original NTSB recommendation by clicking here

posted on August 27, 2009 View all news

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