Halloween Is the Deadliest Day of the Year for Children Walking on American Streets. Watch out for Cars!

The scariest thing about halloween may be the roads.

30 Oct 2026, 11:11 by Tibi Puiu · ZME Science

Credit: Unsplash.

On Halloween night, America’s quiet suburban streets transform. Sidewalks fill with witches, superheroes, and miniature monsters. Millions of children dart from house to house across the country, clutching bags of candy, while parents trail behind. For a few hours, countless neighborhoods become huge playgrounds.

But despite the festive appeal, there’s a danger hiding in plain sight, and it has nothing to do with ghosts or goblins.

It’s cars.

A 2018 study in JAMA Pediatrics based on more than four decades of American traffic data found that pedestrian fatalities were 43% higher on Halloween evenings than on comparable nights. For children between the ages of four and eight, the difference was even more alarming: pedestrian deaths were ten times as frequent.

While Halloween is a great opportunity to have fun and form stronger bonds with your community, it’s also one of the most dangerous times of the year for children as pedestrians.

Forget ghouls, beware of cars

Researchers at the University of British Columbia, Canada, combed through data from the National Highway Traffic Safety Administration’s Fatality Analysis Reporting System. Over a 42-year study interval spanning 1975 to 2016, 1,580,608 fatal traffic crashes were recorded, involving 2,333,302 drivers and 268,468 pedestrians.

They compared pedestrian deaths between 5 p.m. and midnight on Halloween with fatalities during the same hours exactly one week before and one week afterward.

Across 42 Halloween evenings, 608 pedestrians were killed in the U.S., which works out to roughly 14.5 pedestrian deaths on an average Halloween night, versus 10.1 on an ordinary evening. That’s a 43% higher relative risk of pedestrian fatality during Halloween compared to control evenings.

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The most vulnerable group was children aged 4 to 8, who had a tenfold risk of fatality from a car crash. The danger peaked around 6 p.m., precisely when children were heading out to collect candy and evening traffic was still moving through residential neighborhoods.

“Halloween traffic fatalities are a tragic annual reminder of routine gaps in traffic safety. On Halloween and throughout the year, most childhood pedestrian deaths occur within residential neighborhoods. Such events highlight deficiencies of the built environment (eg, lack of sidewalks, unsafe street crossings), shortcomings in public policy (eg, insufficient space for play), and failures in traffic control (eg, excessive speed),” the authors noted in their study.

Why Halloween’s Most Dangerous Hours Begin at Dusk

Credit: Pixabay.

The danger isn’t uniquely American. In a 2021 study published in the International Journal of Environmental Research and Public Health, researchers examined nearly three decades of British traffic records, covering more than 73,000 children and teenagers injured in road crashes. They discovered a similar Halloween pattern. Between 5 p.m. and 7 p.m., child traffic casualties were more numerous than on ordinary days or other holidays.

Among children injured in crashes between 5 p.m. and 6 p.m., the odds of being killed or seriously injured were 34% higher on Halloween than on ordinary weekdays. What’s likely going on is that trick-or-treating is colliding with evening rush hour, so there are now many more instances when a crash can happen simply because there are so many more pedestrians than on a typical evening.

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The dark evening is also another factor. In a 2025 study in the Journal of Safety Research, scientists at the Insurance Institute for Highway Safety examined what happens when Americans move their clocks forward or backward. Following the autumn shift to standard time, fatal crashes involving pedestrians and cyclists increased by 13% during the hours affected by changing light conditions. After the springtime change, crashes fell by 24%.

But difficulties spotting a child crossing a busy intersection is only part of the equation. How fast a vehicle is traveling can determine whether a collision causes a minor injury or something far worse. In another 2025 study, researchers analyzed 202 pedestrian crashes and found that both impact speed and the height of a vehicle’s front end strongly influenced injury severity. Their estimates suggest that the average risk of serious injury or worse rose from 18% at an impact speed of 20 miles per hour to 32% at 25 miles per hour. On a crowded Halloween street, even a modest reduction in speed could make an enormous difference, which is something drivers should be particularly cognizant of.

So what should we do? The researchers argue that preventing Halloween tragedies requires more than reminding children to look both ways. Residential streets need better lighting, safer crossings, and measures that force drivers to slow down. Reflective materials on costumes and trick-or-treat bags can help children stand out after dark, while keeping parked cars away from intersections can improve visibility.

In fact, most of these recommendations help curb pedestrian fatalities year-round, not just on Halloween or some other festivity. For instance, a 2026 study published in the Journal of Urban Health examined pedestrian crashes in Boston between 2016 and 2023. Neighborhoods with more streetlights generally experienced greater reductions in pedestrian crashes over that period, while the proportion of crashes occurring after dark rose citywide.

“Halloween trick-or-treating encourages creativity, physical activity, and neighborhood engagement. Trick-or-treating should not be abolished in a misguided effort to eliminate Halloween-associated risk. Instead, policymakers, physicians, and parents should act to make residential streets safer for pedestrians on Halloween and throughout the year,” the researchers concluded.