MADISON, Wis. -

A Winnebago County traffic safety group is asking lawmakers to leave the state’s speed limit alone.

The bill that would raise the speed limit from 65 to 70 miles per hour on interstates passed the Assembly and is heading to the Senate for a vote.

Supporters, including the bill’s author from Manitowoc, said cars are safer than ever before, and a change would help the state’s economy.

But police and others are worried that raising the limit will lead to more deadly crashes.

“The evidence is pretty clear. That accident is going to be more severe, more likely fatal the higher the speed is,” said Kevin Wilkinson with Neenah police.

A hearing on the bill will happen Thursday. If approved, the bill gives the Wisconsin Department of Transportation six months to change the signs on the interstate to 70 mph.