Dan mentions that accident odds increase 100% per teenage passenger.

It is generally lower among male teenagers; among drivers of S.U.V.'s, vans or pickup trucks; and teenage drivers with teenage passengers.

As the driver, I was constantly entertained even as my two teenage passengers rode in comfort.

The lowest use was among teenage passengers riding with adult drivers who were unbelted.

Where the adult was wearing a seat belt, 46 percent of teenage passengers wore belts.

And their use of belts is least likely in the most dangerous of conditions: when driving at night, under the influence of alcohol or with several teenage passengers.

For example, during the intermediate stage, a driver may not be allowed to have more than one teenage passenger or to drive at night without adult supervision.

Even in states that have not adopted all the elements of graduated licensing, restrictions involving night driving and the number of teenage passengers have been found to improve driving safety.

Parents can add restrictions on night driving, the number of teenage passengers, driving in bad weather and adjusting the stereo while driving.

Finally, they deliver the Speech, to as many of the teenage passengers and parents as possible, reminding everyone that students are forbidden to drink alcohol or smoke.