Richard Blumenthal @SenBlumenthal
NTSB first recommended Positive Train Control nearly 50 years ago. This proven technology can save lives and prevent injuries. — PolitiTweet.org
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Mon Dec 18 22:18:24 +0000 2017
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Richard Blumenthal @SenBlumenthal
NTSB first recommended Positive Train Control nearly 50 years ago. This proven technology can save lives and prevent injuries. — PolitiTweet.org