April 25, 2017: Adjustment of Nationwide Significant Risk Threshold

The Federal Railroad Administration has issued the seventh update to the Nationwide Significant Risk Threshold (NSRT), increasing it from 14,37 to 14,723.
The NSRT is an average of the risk indexes for nationwide gated public crossings where horns were routinely sounded. It was created to serve as a threshold of permissible risk for quiet zones. Communities that wish to establish or maintain a quiet zone can review the Quiet Zone Risk Index and determine whether proper measures have been taken to compensate for the increased risk that comes from prohibiting routine locomotive horn sounding.
The effective date of this notice is April 25, 2017.

Docket No. FRA–1999–6439, Notice No. 25