Plate Tectonic risks apply to all modes
Thousands of roads and bridges cross fault lines. Occasionally an earthquake (plate tectonic movement) occurs that causes one to fail, and a few people to die. The amount of deaths is less than a 0.01% as much as annual automobile accident deaths. The major safety focus of ET3 is doing something about want kills 99.9% of people in transportation -- failure to control the vehicle, and failure to control the conditions of travel.
One of the experts on the ET3 design team is Dr. Kumada a top physicist in Japan. He has studied the ample quake data and concures that ET3 can be actively aligned faster than the earth is capable of moving, and that while crossing fault lines with ET3 will cost more, it will not represent great risk. (NOTE: the Alaska pipeline crosses the Danali fault, there was a major movement (over 1 meter) and no oil was spilled.
