Can you tell me your city/region of provenance?
Can you tell me your age?
Sex
Do you have a driver's license?
Do you drive at least once a week?
To what degree do you consider the use of cell phones while driving to be risky?
How often you use your cell phone while driving in the last 30 days?
Stopping at a traffic light
Driving in intermittent traffic
Driving at low speed
Driving faster than 25 miles or 40 kilometers per hour
Voice calling
Reading texts
Composing texts
Map Browsing
Social networking
Reading emails
Writing emails
Frequency_Voice calling
Frequency_Reading texts
Frequency_Composing texts or texting
Frequency_Map browsing
Frequency_Social networking
Frequency_Reading emails
Frequency_Writing emails
Qualitative question (Spanish speech; non-translated)
Qualitative question (English; translated)