How to Protect Yourself in a Multicar Pileup
Chain-reaction crashes like the deadly one on an icy Ohio highway are unpredictable. Here's what to do if you're in one.
As winter weather increases the risk of severe car crashes, including a 46-vehicle pileup in Ohio that killed four people on Dec. 23, 2022, you might be wondering what—if anything—you can do to protect yourself from getting involved in a similar multivehicle crash, or what to do if you find yourself stuck in one.
Once a chain-reaction crash starts, it can be impossible to avoid further collisions, so it’s important to recognize the risk factors for a pileup to prevent it from happening in the first place. Chain-reaction collisions tend to take place when “the driving conditions have changed because the environment has changed,” says Robert Swint, CEO of ATA Associates, a crash investigation firm based in Texas that has analyzed more than 6,000 crashes over 50 years, including many chain-reaction collisions.
Swint talked with Consumer Reports in 2021 on his way to investigate a deadly pileup outside Fort Worth, Texas. He says that such crashes are usually due to sudden, weather-related changes. “It’s sometimes by fog, sometimes by sandstorm, sometimes by rain, but the primary contributor is icy and snowy conditions,” he says.
Don’t make any sudden moves. When the roadway is slippery, even small changes in speed or direction can cause a loss of control, so you must drive slowly and smoothly. “Gradually change your speed, and don’t try to abruptly change directions,” Swint says. If you find yourself traveling too fast, let your foot off the gas instead of hitting the brakes. Applying the brake rapidly can put a car into a skid, where you’ll also lose control over steering. “We like to say that speed is better controlled with the accelerator than the brake,” Van Tassel says. “Just the slightest lift of your foot can help.”
Watch the roads—literally. You know those yellow signs that say “bridge freezes before road”? They’re there for a reason, Swint says. “When there’s open air under the roadway, the road freezes quickly,” he says, which can lead to black ice—a slippery, icy surface that isn’t visible like other kinds of ice and slush. So lay off the accelerator when you approach a bridge or an overpass.
Know your car’s limits. Don’t confuse your vehicle’s ability to accelerate with its ability to stop in an emergency. This is especially true of four-wheel- or all-wheel-drive vehicles, which tend to give drivers a false sense of security, says Gene Petersen, who spent his career studying vehicle dynamics and recently worked as the tire program manager at CR. A two-wheel-drive vehicle might occasionally slip or slide on icy or snowy roads, letting drivers know just how little traction their vehicle has. A four-wheel-drive vehicle is more likely to stay pointed forward—but that can get drivers into trouble. “You can’t stop any better, yet you may be traveling a lot faster,” Petersen says. “No matter how good your tires are or whether you have all-wheel drive or two-wheel drive, your vehicle has the same four points of rubber touching the ground.”
The same goes for technology, Van Tassel says. If your vehicle’s traction control system activates while you’re driving—indicated by an orange warning light that shows S-shaped lines behind the outline of a vehicle—that’s a clear sign that you should slow down. "Just the fact that it’s activated is good feedback to drivers.” And although advanced safety systems like automatic emergency braking can prevent a crash, the cameras and sensors that those systems rely on often don’t work if they’re covered in snow, or if the road ahead is obscured by fog.
Minimize the damage. Even if a crash is inevitable, you can still take control of the situation. “There’s going to be a bad outcome—it’s just a matter of how bad it’s going to be,” Van Tassel says. On ice and snow, slamming on the brakes can put the car into a skid and cause you to lose steering and braking control. Use the brakes gingerly to slow down and try to steer into a soft object—like shrubs or a guardrail—instead of another vehicle. And keep an eye out for people who may be walking around the scene of an earlier crash.
Stay in your car after a crash. It might be a natural instinct to get out of a car after a crash, but it is best to pause before unbuckling or exiting. A two-car incident can quickly involve three, four, or more vehicles. Your crashed car is likely the safest place to be. “We’ve had numbers of accidents where the people who are getting killed are the people getting out of the car and who start walking around,” Swint says. Even in the harried moments after a crash, drivers should take a deep breath and assess the situation. “If other cars are approaching and smashing into things, stay in your car,” Van Tassel says. “Cars can offer a lot of protection to their occupants.” Keep your seatbelt on, turn on your hazard lights, and wait for the crashes to stop.
When you exit, move to the front of the crash. If your car or a nearby vehicle catches fire, it may be necessary to get out of a vehicle. If that happens, and it’s obvious that a multivehicle crash is still taking place, get away from other vehicles. Run forward toward the crash and then past it, Swint says—even though he says that advice may sound counterintuitive. Don’t stand between two cars where you might be crushed if another impact takes place. And whatever you do, don’t stand on a shoulder or in front of a guardrail or concrete barrier, because drivers may attempt to avoid the pileup by driving on the shoulder, and fast-moving vehicles often end up shunted along concrete barriers. “If you’re on a bridge, go away from the flow of traffic,” Swint says, because ongoing collisions can push pedestrians over the edge of a railing.
In the future, new technology might be able to prevent chain-reaction collisions. Vehicle-to-vehicle and vehicle-to-infrastructure communication allows vehicles to “talk” with each other and receive data from traffic sensors on the roadway, so your car might know to start braking if there’s a crash ahead even if you can’t see it through dense fog. In turn, how your car reacts could communicate vital information that can be automatically shared with other motorists. Until this technology is widespread, however, drivers will need to remain vigilant.