* 1. How do you most often commute?

* 3. In a typical month, how much do you usually spend on public transport?

* 4. In which city/town do you live?

* 5. How often do you have trouble paying your fare?

* 6. How often have you ever had to walk home because public transport stopped running?

7. Which public transportation system do you use (if any)? (e.g. Boston's MBTA, NYC's MTA, London's Tube)