July 17, 2015 - With Governor Baker signed the Massachusetts 2016 State Budget, failure to turn on headlights when windshield wipers are on is no longer a surchargeable offense (outside the budget item, Section 74). However, the use of headlights & taillights when wipers are in use is still required and a ticketable offense; however, receiving a ticket will not result impact your driving record and hence your insurance premium. 

On April 7 2015, a new law (M.G.L. c. 85, § 15) went into effect requiring that headlights and taillights be turned on if windshild wipers are in use. Motorists are required to turn on headlights and taillights:

• whenever the windshield wipers are on.
• when visibility is reduced so that persons or vehicles
  are not visible at 500 feet due to insufficient light or unfavorable atmospheric conditions.
• 1/2 hour after sunset and 1/2 hour before sunrise has not changed.

(Note: Use of daytime running lights is not sufficient.)