Why Safety Belts Work - GMC 2009 Yukon XL Owner's Manual

After more than 40 years of safety belts in vehicles, the
facts are clear. In most crashes buckling up does
matter... a lot!

Why Safety Belts Work

When you ride in or on anything, you go as fast as
it goes.
Put someone on it.
Take the simplest vehicle. Suppose it is just a seat on
wheels.
1-33