Derailment after derailment. They just keep happening.

Since early February, there have been at least four train derailments in North America carrying crude from North Dakota’s Bakken Shale. These accidents have sparked increased calls from citizens, the rail industry and lawmakers for the federal government to increase safety regulations.

To keep up with these incidents, PublicSource will provide a roundup of stories every week.

Federal regulators order companies to slow trains down through major cities, according to McClatchy .

Feds impose lower oil train speeds ahead of new safety rules

Canada follows U.S. by ordering trains to slow down in urban areas, according to The Wall Street Journal.

Canada issues directive aimed at slowing crude-carrying trains

84 defects were found after state and federal checks on oil trains and tank cars in New York state, according to The Albany Times Union.

Oil train inspections turn up defects

Reach Natasha Khan at 412-315-0261 or nkhan@publicsource.org. Follow her on Twitter @khantasha.

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Natasha is PublicSource's creative director. She runs the organizations visuals team, edits and produces interactive graphics, data visualizations and web packages for PublicSource. She manages the website...