article_snippet: Boston (Dun Meng Dun Meng knew to pull over Dun Meng Mercedes-Benz SUV to respond to a text message that night in April 2013.
article_snippet: Massachusetts Institute of Technology police Officer Sean Collier drove along the Charles River with no destination in mind.
article_snippet: Massachusetts Institute of Technology police Officer Sean Collier pulled over after receiving a text message.
article_snippet: I'm a traffic engineer, and I know a traffic engineer is unsafe to text while I'm driving," Massachusetts Institute of Technology police Officer Sean Collier said.