Lt. John Flannigan says he can't say the lack of fatalities is a result of the enforcement, but more officers have been working hard across the state to enforce traffic laws.
Message boards are also being used on the interstate highways that are displaying safety messages, reminding motorists to slow down and drive safely.
Flannigan says he's been hearing from the public that motorists are slowing down.
In the first half of 2012 there were 42 traffic fatalities in 37 crashes. That's well above last year's record low of 54 and on pace to exceed the three-year average of 72 fatalities.