An estimated 20 million Americans who purchased a real Christmas tree in the last three years did not properly secure it to their vehicle, according to AAA.

This festive season, AAA is warning drivers that improperly secured Christmas trees can cause damage to vehicles such as scratched paint, torn door seals and distorted window frames, potentially costing 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.

“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.”

Every state has laws that make it illegal for items to fall from a vehicle while on the road. Penalties result in fines ranging from $10 and $5,000, with at least 16 states listing jail as a possible punishment for offenders. Drivers can prevent injuries and avoid penalties by properly securing their loads to prevent items from falling off the vehicle.

AAA provides the following tips for transporting Christmas trees:

  • Use the right vehicle. It’s best to transport a Christmas tree on top of a vehicle equipped with a roof rack. If you do not have a roof rack, use the bed of a pickup truck, or an SUV, van or minivan that can fit the tree inside with all doors closed.
  • Use quality tie downs. Bring strong rope or nylon ratchet straps to secure the tree to your vehicle’s roof rack. Avoid the lightweight twine offered by many tree lots.
  • Protect the tree. Have the tree wrapped in netting before loading it. If netting is unavailable, secure loose branches with rope or twine.
  • Protect your vehicle. Use an old blanket to prevent paint scratches and protect the vehicle finish.
  • Point the trunk towards the front. Always place the tree on a roof rack or in a pickup bed with the bottom of the trunk facing the front of the vehicle.
  • Tie it down. Secure the tree at its bottom, center and top. At the bottom, use fixed vehicle tie-down points and loop around the trunk above a lower branch, to prevent any side-to-side or front-to-rear movement. The center and top tie downs should be installed in a similar manner.
  • Give it the tug test. Before you leave the lot, give the tree several strong tugs from various directions to make sure it is secured in place and will not blow away.
  • Drive slowly and easily. Take the back roads, if possible. Higher speeds create significant airflow that can damage your Christmas tree and challenge even the best tie-down methods.