Speak to their desire to be smart - Being a "safe driver" is not something teens aspire to become. Smart driving, on the other hand, combines skill and safety, and is something teens can desire and attain.
Talk to other parents - Give each other the authority to take the teen's car keys and call the teen's parents, call a taxi or allow the teen to sleep over. Agree that you'll never permit a teen to leave your house and drive if you suspect that he has been drinking.
Express your authority - Your teens need you to be a parent, not another friend. Provide guidelines and consistently enfore them.
To get started, complete the Parent-Teen Driving Contract.
