According to a new AAA survey, an estimated 20 million Americans who purchased a real Christmas tree in the last three years did not properly secure it to their vehicle, risking serious vehicle damage and dangerous road debris. Vehicle damage that results from an improperly secured Christmas tree, such as scratched paint, torn door seals and distorted window frames, could cost up to $1,500 to repair. In addition to vehicle damage, Christmas trees that are not properly secured are a safety hazard for other drivers. AAA urges all drivers to transport their Christmas trees safely this holiday season.

“Twine that is wrapped around trees and looped through door jambs or open windows can cause serious damage to door seals and window frames,” said Greg Brannon, director of Automotive Engineering and Industry Relations. “Drivers should never secure a Christmas tree to the top of a vehicle without a roof rack.”

And according to the AAA Foundation for Traffic Safety, road debris – which could include objects like improperly secured Christmas trees that fly off cars, landing on the road or on other cars – was responsible for more than 200,000 crashes that resulted in 39,000 injuries and 500 deaths over the past four years. And, about two-thirds of debris-related crashes are the result of improperly secured items falling from a vehicle.