Which automotive safety design feature, first introduced by Volvo in 1959, was deliberately NOT patented to allow all manufacturers to adopt it freely for public safety?

The transportation industry has seen remarkable transformations in product design over the decades, with safety, efficiency, and user experience driving innovation. From aircraft to automobiles, trains to ships, design choices have shaped not just how we travel, but also brand identities and market success. Test your knowledge about a pivotal design decision that revolutionized the transportation industry!

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Three-point safety belt
Crumple zone technology
Laminated safety glass
Anti-lock braking system (ABS)