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.

My philosophy is: Everybody needs to look out for everybody else.

Many police officers watch for vehicles without headlights because it's a telltale of a drunk driver.

I think that maps showing platform details would be useful to visitors, especially to chaperones of school groups, etc. Also useful would be either a compass rose or an arrow pointing North at every metro exit. Emerging from underground is disorienting, especially at night.

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.

I love the cameras and don't mind mailing in my check when I fail to pay attention and go too fast.

Metro, built in the late 20th century, is the most escalator-dependent system in the world.