DA: Cop won't be charged in fatal South Boston crash

But Boston Police need to review their techniques and training for emergency situations to reduce the odds of more crashes, Suffolk County DA Dan Conley says.

Conley announced today that his office found no reason to charge Officer Jess Stots with the death of Ann-Marie McNally in a collision at West Broadway and D Street on Nov. 10, 2007.

Stots was racing toward a report of an officer in trouble and a man with a knife when he entered the intersection just as McNally did.

"The evidence is clear that Ms. McNally acted cautiously and reasonably and bears no responsibility for the collision," Conley said. At the same time, however, the fact that Stots was responding to an emergency situation was a mitigating factor on his behalf, Conley said.

Conley said he is urging the Boston Police Department to review its policies related to emergency calls to ensure the safety of civilian motorists - by reviewing training, policies on red lights and intersections and communication between cruisers and dispatchers. Police should also look at the potential use of dashboard cameras in cruisers.

"The McNally family, and everyone who knew Ann-Marie, must live with her loss forever," Conley said. "We owe it to them to do everything we can so that some positive, meaningful change can arise from their tragic loss and not one more family goes through what her loved ones have suffered."