It was one of the deadliest holiday weekends on Connecticut roads in three years, according to police.

State police say it's up to drivers to take more responsibility when they get behind the wheel.

"We have to work together to keep these numbers down," said Trooper First Class Pedro Muniz, with Connecticut State Police.

State police say there were 10 fatalities on Connecticut roads over the holiday weekend - the most in three years. State police responded to 6,448 calls for service. Those numbers are only from state police.

"We were out there, we had extra patrols for enforcement, we had a click it or ticket campaign going on. We had extra DUI roving patrols some spot checks. So we were out there but we can only do so much," said Muniz.

There were fatalities in both Hampton and Madison. The Madison crash killed a driver who crashed into the back of a tractor-trailer.

Four people died in each of the accidents in Thompson and Guilford.

The driver in the Thompson crash tried to pass a car, lost control and it a tree, killing the driver and three passengers.

Among the victims in that Guilford accident, were three people from Norwalk - Johnny and Caroline Bookhardt, and Patricia Greene-Kessler. They were struck by a driver going the wrong way.

A member of the Bookhardt family in Norwalk told News 12 Connecticut they are still in shock over this tragedy.

"The weather was great. I think a lot of people took advantage of that and unfortunately there was too many families and loved ones that lost loved ones this weekend," said Muniz.