For decades, the design of car and airplane safety systems has been based on the average male body. Emerging evidence now reveals that this bias is having a deadly consequence, making transportation significantly more dangerous for women.
At the heart of the issue is the crash test dummy. Since the dawn of modern vehicle safety testing, the standard dummy has represented the 50th-percentile male—about 1.77 meters tall and 76 kilograms. This model is used to set nearly all global safety regulations.
For years, the only attempt to represent women was a smaller, lighter dummy, often called the “5th-percentile female.” However, critics point out this is simply a scaled-down version of the male dummy. It fails to account for critical biological differences:
- Different Muscle Strength and Ligament Laxity: Women generally have less neck muscle mass and different spinal flexibility, changing how whiplash occurs.
- Bone Density and Pelvis Structure: The female pelvis is shaped differently and bone density varies, affecting how impact forces are distributed.
- Organ Placement and Center of Gravity: These fundamental physical differences mean the force of a crash interacts with a woman’s body in a unique way.
The Stark Consequences: 73% Higher Risk
This one-size-fits-all approach has a measurable human cost. A landmark study from the University of Virginia found that women are 73% more likely to be seriously injured in a frontal car crash than men. They are also significantly more vulnerable to injuries to the spine, legs, and abdomen.
The problem extends beyond cars. In aviation:
- Airplane seats and seatbelts are tested using the same male-centric dummies.
- This means evacuation procedures, brace positions, and the force of an emergency landing are all optimized for the male physique.
- This can lead to women being exposed to higher risks during in-flight emergencies.
A Scientific Breakthrough: The First True Female Dummy
After years of advocacy, a significant breakthrough came in 2022. A team of Swedish researchers at Chalmers University of Technology developed EVA, the first crash test dummy based on accurate female biology.
EVA is not a scaled-down male. She is designed using extensive data on female anatomy, representing an average woman (about 1.62 meters tall and 62 kilograms). This allows engineers to see, for the first time, exactly how crash forces impact a typical female body, leading to safer seatbelt designs, airbag deployment strategies, and headrest positioning.
The Roadblock: Why Isn’t This New Dummy Being Used?
Despite its potential to save lives, EVA’s adoption faces hurdles:
- Outdated Regulations: Global safety standards (like those in the EU and US) have not been updated to require the use of advanced female dummies. Manufacturers are not obligated to use them.
- Cost and Inertia: Retooling testing procedures and designing new safety systems around fresh data requires time and financial investment. There is a natural resistance to changing long-established methods.
- Awareness Gap: Many consumers and policymakers are still unaware of the severe safety disparity.
A Call for Action: Demanding Inclusive Safety
Safety advocates, medical professionals, and lawmakers are now pushing for change. Their demands include:
- Updating Regulations: Governments must mandate the use of biofidelic female dummies in all mandatory safety tests.
- Beyond the Binary: Future testing should also account for the elderly and people of different body sizes.
- Transparency: Car and aircraft manufacturers should be required to publish safety ratings for both male and female occupants.
“The data is clear,” says Dr. Astrid Linder, lead researcher on the EVA project. “Safety should not be a privilege determined by your gender. By designing for diversity, we create a safer environment for everyone.”
This issue highlights a critical flaw in engineering and regulation: when we design for the “average person” who is male, we inadvertently put half the population at greater risk. The solution—a more inclusive approach to safety—is now scientifically within reach.
independent