Teacher:Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Teacher: Now, understand the problem? Solve this instance: When taking shared ride vans in the United States are you expected to tip? If so, how much?

To be clear I'm talking about services where you are lumped along with 5-6 strangers in a van that then takes each passenger to their destination from the airport (or vica versa).

It's not quite a taxi (where I would tip) and it's not quite a bus (where I wouldn't tip), but occupies some sort of middle ground between the two.

Student:
Tipping in shared ride vans