Even though they are at a higher risk for rollovers, SUVs are considered the safest type of vehicle when it comes to fatalities. Thinking about the science of energy transfer can help you understand why bigger vehicles are naturally safer. Larger objects, because they are heavier, transfer more energy to an object they come in contact with. So when an SUV crashes into a sedan, you can compare it to a baseball bat hitting a ball. This makes SUV drivers five times more likely to walk away from a crash than someone driving a car. They are also more likely to survive a head-on collision.