Place your hand on a steel rail after a 100-car train has just passed and feel the lack of heat. Friction is low when a hard steel wheel rolls over a hard steel rail. Consequently, the wheels last for hundreds of thousands of miles and the rail lasts for decades. Low friction means that hauling heavy weight and people over rails uses 1/2 to 1/6 the amount of energy while producing fewer emissions than moving comparable weight over roads.

Overusing the wheel under single vehicle cars and trucks on rubber tires over rough concrete and asphalt wastes fuel, pollutes air, and diminishes available space. Apply the simple principles of friction efficiency to the task of moving heavy weight and people over land and we take a major step in the direction of creating a sustainable, resilient society.

Hyperloop transit, autonomous vehicles, and flying hotel pods are all exciting possibilities. But let’s not allow the spectacle of high-tech to blind us to the positive immediate impact that could be produced by intelligent use of a steel wheel rolling on a steel track.

Our landing page says it all: “Nothing is more important to our future than our use of the wheel.”

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