You could have no chance of hitting someone by using fences along track like in the U.K. plus platform edge doors (so that nobody is ever exposed to the railway

You could have no chance of hitting someone by using fences along track like in the U.K. plus platform edge doors (so that nobody is ever exposed to the railway in any legitimate circumstance), or raised/tunnelled track where maintained fences aren’t a possibility. You could even use drones to monitor your fence, for another cool factor. People would have similar concerns about the visual pollution of Hyperloop vs fencing, and auditory pollution can be solved by correctly maintained sound barriers (even trees!).