The National Highway Traffic Safety Administration says kids are four-times more likely to be hit by a car on Halloween than on any other day of the year.
Cynthia Harris is with AAA Northern California.
"We don't want to put a damper on Halloween but we want to make sure that all children are safe. We want to remind motorists that they need to slow down when they are in neighborhoods; parents are encouraged to walk with their children door to door; also, trick-or-treaters should always face traffic while walking that way they can see the cars as they're approaching."
Harris says other tips for parents include: dressing the kids in light-colored clothing or costumes with reflective material for the best visibility; and using face paint instead of masks, which can limit the ability to see and hear oncoming traffic.