* 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)