While wicked weather may be the biggest threat to trick-or-treaters Halloween night, experts say there are some American cities that are more dangerous than others when it comes to the beloved annual event.

According to Safe Kids Worldwide, children are more than twice as likely to be hit by a car and killed on Halloween than on any other day of the year. The warning comes as more than 41 million people are expected to hit the streets Thursday for fright and fun, according to Cambridge Mobile Telematics.

CMT says it analyzed dangerous traffic patterns from phone sensors on October 31, 2018, and found some frightening statistics. CMT reports speeding increased by an alarming 235 percent on Halloween, while drivers slamming on brakes increased 178 percent.  CMT used the data to identify the best and worst places to trick-or-treat.