MONTPELIER (AP) -- A new Vermont law calls for a state policy and enhanced police training on the use of stun guns.

Gov. Peter Shumlin signed the bill into law Tuesday, nearly two years after MacAdam Mason, 39, of Thetford, died of heart failure after being struck in the chest by a state trooper’s stun gun.

The law calls for the creation of a policy on stun gun use that will be adopted by police departments.

It says officers may use a stun gun only against people who are exhibiting active aggression or who are actively resisting in ways that are likely to harm themselves or others.

Gov. Peter Shumlin said the goal is to ensure that Tasers are another tool for police officers to safely bring life-threatening situations under control.

"A clear policy and additional training will help prevent some of the problems too often associated with Taser use," Shumlin said.

Rhonda Taylor, Mason’s mother, told WCAX-TV that the bill was a good compromise.

"It means a lot to me that no other family will ever have to suffer this pain," she said.