According to the National Highway Traffic Safety Administration data, drunk driving crashes are as much as 40 percent higher between Thanksgiving and New Year's Day than the rest of the year. The legal blood alcohol limit in the U.S. is higher than around the world, and advocates say lowering it would reduce fatal car crashes. John Yang speaks with researcher James Fell to learn more. PBS News is supported by - https://www.pbs.org/newshour/about/funders