New Law for New Drivers in 2007
The new law also requires at least 10 of those 40 hours to be night driving. Swafford said parents must take the law just as seriously as their teenage drivers.
"They've got to be out there, they've got to be in it," she said. "You've got to be interacting with them, pointing things out to them, preparing them for being out on their own."
The state Department of Motor Vehicles said more practice behind the wheel increases teens' chances of passing the driving test. Columbia Driving School owner Drew Scheneman agreed.
"Some people need more, some people need less, but in order to form [good] habits you need those high amount of hours," he explained. "I'm so glad they raised it from 20 to 40."
Missouri law also requires a parent, guardian or qualified instructor to supervise a teen who drives with a permit.