Believe it or not, studies show that parents are the greatest influence over a teen’s driving habits, both before and after the kids receive their licences. One tool many parents have used to keep their kids safe while driving is a contract. The kids will call the idea dumb, but it works. Possibly because kids function best when they know the rules and specific consequences.
If you have a teen driver now or coming up, sit down with him or her with a contract and talk about each provision. (The talking itself is a good deterrent to risky driving habits.) Some are more simple than others. Below are links to several you might take a look at. Choose one that fits your family best.
Allstate — https://www.allstatefoundation.org/pdf/Parent-Teen-Agreement-MI.pdf
AAA — http://teendriving.aaa.com/wp-content/uploads/2015/01/Parent.Teen_.Driving.Agreement.pdf
American Academy of Pediatrics — https://www.cdc.gov/motorvehiclesafety/pdf/driving_contract-a.pdf