Seems like people could behave themselves without making a calculation regarding how likely or unlikely they are to kill other people.

Motors that are vulnerable to shorting out because of snow ingestion should have snow filters installed over air intakes, and spare motors should be ready to replace any failed motors.

I don't believe any sort of traveler does a better job than any other sort of traveler at obeying traffic safety laws. It's difficult to foresee a camera program that can be used with bikers and walkers.

Metro shows no signs of being able to make its trains run on time. This occurs during single-tracking and it occurs during normal rush hour service.

If you think your job requires you to endanger people, get another job.

It would be helpful to be able to see the layout and for the maps to label what exits to use to get to nearby sites/buildings so you aren't wandering the station trying to read the signs in the crowds.

Automate the headlights so drivers can't forget to turn them on in low visibility.