Is there etiquette for riding a cable car?

There are a few rules and courtesies to keep in mind, which only apply if you're getting on a cable car from a stop along a route as opposed to the end of the line. It's important to wait on the sidewalk and wave to the gripman to let him or her know that you'd like to board. Make sure the cable car has come to a complete stop before doing so. You can board on either side of the car but there must be enough room. If not, please wait for the next one.