Category	Attitudinal questions	Response statistics
Privately-owned AVs	Q1. Do you have a positive or negative view of self-driving cars?	Positive		Neutral		Negative	N
		304 (36.7%)		343 (41.5%)		180 (21.8%)	827
	Q2. Would you be likely to purchase a fully self-driving car when these are available?	Yes		Uncertain		No	N
		277 (33.4%)		243 (39.4%)		308 (37.2%)	828
Shared AV services	Q3. Would you use a taxi service that was self-driving?	Yes		Maybe		No	N
		189 (24.2%)		289 (37.1%)		302 (38.7%)	780
	Q4. Would you use a self-driving taxi that is shared with someone you do not know?	Yes		Maybe		No	N
		163 (21.1%)		217 (28.1%)		392 (50.8%)	772
	Q5. How many minutes would you be willing to wait to/from work when using ridesourcing services?	Min	Median	Mean	Max	SD	N
		0/0	10/10	11.8/11.9	60/60	10.0/10.3	638
	Q6. How many minutes would you be willing to wait to/from a grocery store when using ridesourcing services?	Min	Median	Mean	Max	SD	N
		0/0	10/10	12.4/11.8	90/80	10.3/10	637
	Q7. How many minutes would you be willing to wait to/from a restaurant when using ridesourcing services?	Min	Median	Mean	Max	SD	N
		0/0	10/10	13.5/12.7	120/60	11.6/10	638