Florida families spend a lot of time in the car, and for much of the year the car is also one of the hottest places a child can be. Autistic children can face extra risks: some love to climb into parked cars to play or hide, some unbuckle themselves while you drive, and some cannot call for help if they get trapped. This guide covers the facts on hot cars, what Florida law says, the car-seat question parents ask most ("how do I stop my child unbuckling?") and how to teach car safety skills.
How fast does a car get dangerous for a child?
The National Highway Traffic Safety Administration (NHTSA) explains why children are at such risk:
- "A child's body temperature rises three to five times faster than an adult's."
- Heatstroke begins when the core body temperature reaches about 104 degrees, and death can occur at 107 degrees or above.
- Rolling the windows down or parking in the shade "does little to change the interior temperature of the vehicle."
- In 2025, 31 children died of heatstroke in vehicles in the United States.
NHTSA reports that more than half of these deaths happen because a parent or caregiver forgets a child in the car, and that more than 230 children have died since 1998 after getting into a vehicle on their own and becoming trapped. Both patterns matter for autistic children: a change in routine makes forgetting more likely, and a child who is drawn to cars, or who hides when upset, may climb into one unseen.
How do we prevent hot-car tragedies?
NHTSA's advice for parents and caregivers, with notes for autism families:
- Never leave a child in a vehicle alone, for any length of time. That includes "just running in" to a store or pharmacy, and the minutes when you unload groceries.
- Check the whole car, especially the back seat, before you lock it and walk away. Make it a habit on every trip, not only on unusual days.
- Ask your child care provider or therapy center to call you if your child does not arrive as expected.
- Put something you need in the back seat, such as your purse, phone or work bag, so you have to open the back door.
- Keep keys and fobs out of reach and teach children that a car is not a play area.
- Always lock your car, even in your own driveway, and close the garage. A child from your home or your street could climb into an unlocked car.
If your child is missing, check parked cars and trunks on your property and nearby as part of the first search, along with water. Our page on what to do if your autistic child is missing has the full checklist.
What does Florida law say?
Under section 316.6135, Florida Statutes, a parent, guardian or other person responsible for a child younger than 6 may not leave the child unattended or unsupervised in a motor vehicle for more than 15 minutes, or for any length of time if the motor is running, the child's health is in danger, or the child appears to be in distress. Penalties range from a noncriminal traffic infraction with a fine of $50 to $500, to a second-degree misdemeanor, to a third-degree felony if the child suffers great bodily harm, permanent disability or disfigurement. An officer who sees a child left in violation of the law may use reasonable means to remove the child.
The legal limit is not a safe limit. NHTSA's guidance is that no length of time is safe, and many autistic children over 6 still cannot get out of a car or call for help on their own.
Florida also protects people who rescue a child from a car. Under section 768.139, a person who breaks into a vehicle to remove a "vulnerable person" (a minor or vulnerable adult) is immune from civil liability for damage to the car if they check that the car is locked or there is no other way out, believe in good faith the person is in imminent danger, call 911 or law enforcement before entering or right after, use no more force than necessary, and stay with the person until help arrives. If you see a child alone in a car, NHTSA's advice is to act immediately and call 911.
My child unbuckles while I drive. What can I do?
Car-seat escapes are frightening and common in autism parent groups. Start with safety in the moment, then work on the seat and the skill.
In the moment
- If your child gets out of the harness or belt, pull over as soon as it is safe and stop the car. Do not keep driving while reaching back.
- Re-buckle calmly with as few words as possible, then drive on. Big reactions can turn unbuckling into a game.
Check the seat and the fit
Many escapes happen because a harness is loose or the child has outgrown the seat. The American Academy of Pediatrics (AAP) says the harness should be snug so you cannot pinch any slack at the shoulders, with the chest clip at armpit level. NHTSA recommends keeping children in a forward-facing seat with a harness until they reach the top height or weight limit for that seat. Florida law (s. 316.613) requires a crash-tested, federally approved child restraint for children 5 and younger: a separate carrier or integrated seat through age 3, and a carrier, integrated seat or booster at ages 4 and 5.
Be careful with add-on buckle guards
Many products are sold to stop children opening the buckle. The AAP's advice on car seat add-ons is clear: do not use extra products "unless they came with the seat or are specifically approved by the seat manufacturer," because these products "are not covered by any federal safety standards."
Better first steps:
- Have the seat checked by a certified child passenger safety technician. NHTSA lists car seat inspection stations on its website.
- Ask about seats for special needs. The AAP notes that some children with special needs may use specialized restraints, including travel vests (rated for children 22 to 168 pounds), and points families to the National Center for the Safe Transportation of Children With Special Health Care Needs. Your child's doctor or occupational therapist can help document the need.
- Call the seat manufacturer and ask which accessories, if any, it has tested and approved for that seat.
How can ABA help with car safety?
Staying buckled, waiting in the car and walking safely in parking lots are skills that can be taught. A Board Certified Behavior Analyst (BCBA) might build goals like these, depending on your child:
- Hands in lap or on a toy while driving, with frequent praise or tokens at first, then fading.
- Short practice drives around the block that end with something your child enjoys, then gradually longer trips.
- A car visual schedule: get in, buckle, music on, drive, arrive, unbuckle when the grown-up says.
- Telling an adult with words, a sign or a picture card when the belt feels uncomfortable or they need a break, so escaping is not the only way to say it.
- Parking lot rules: hand on the car, hold hands, wait at the door.
Some children unbuckle because of discomfort: a strap rubs, the seat is hot from the sun, or they cannot see out. Fixing the cause, such as a sun shade or a cooled seat, can matter as much as teaching. Our guide to teaching safety words like "stop" and "wait" shows how these skills are taught step by step.
What about Florida heat in general?
A car is only one heat risk. Many autistic children are sensitive to heat or do not show that they are overheating. Our guide to heat intolerance and autism in Florida covers warning signs and everyday cooling, and our guide to drowning prevention covers the other summer danger.
How can Hope Center help?
At Hope Center, every program is written by a BCBA, reviewed by our clinical director and supported by weekly parent training, so car and community safety can be practiced where it matters: in your own car and neighborhood. Our staff can also go with families to some community appointments, such as doctor and dental visits, where allowed. To talk about your child's safety goals, contact us or call 561-337-8865 for a free consultation and a free insurance benefits check.