(AP Photo/Mark Lennihan)

The National Transportation Safety Board says Metro-North needs to replace thousands of bolts on more than 400 of the railroad’s newest Kawasaki Heavy Industries Rolling Stock Company M-8 train cars. The NTSB released a report earlier this week that stemmed from a derailment in Bridgeport, Connecticut, in May of 2013, that injured dozens of people. The NTSB said the bolts are too weak.

These are the bolts in between train cars that hold two cars together. The NTSB says the bolts didn’t cause the derailment, but their failure made the two-train collision worse.

AP Photo/Mark Lennihan

In December of 2013, an engineer fell asleep while driving a Metro-North train in the Bronx.  It derailed, killing 4 people. 

The NTSB released a report on Wednesday with safety recommendations.  Among those recommendations is that railroads should routinely screen employees who perform "safety-sensitive" functions for sleep disorders.

NTSB Chairman Christopher Hart says they've made the recommendation to regulators of all transportation industries. He says, for example, it’s been helpful for the trucking industry.

Kaomi Goetz

The 118-year-old Walk Bridge in Norwalk, Conn., will be replaced. On Thursday, Connecticut officials announced a funding plan to replace the bridge, which is vital to the Metro-North New Haven line.  

Built in 1896, the bridge has seen better days. It's now decayed and prone to failures. The four-track bridge broke down twice this past summer within a two-week period. The malfunction left Metro-North passengers stranded for hours.

Craig LeMoult

U.S. Senator Richard Blumenthal of Connecticut says he's introducing a bill that would increase federal oversight of the U.S. rail system and require railroads to make safety improvements.  It’s not yet clear how some of that would be funded.

MTA calls in commission of experts

Jun 24, 2014

In response to deteriorating rail infrastructure, the Metropolitan Transportation Authority is calling in experts to help figure out what to do.  The Transportation Reinvention Commission meets for the  the first time on Wednesday.