Table 2. Responses provided to the total of seventeen questions on the Total Distracted Driving Scale.

#Frequency and percentage of cell phone use while driving

Questions	Never	<10%	11-25%	26-50%	51-74%	>75%
Do you use a cell phone while driving? (either handheld or hands-free)	269 (66.74%) #
If you use a cell phone while driving, what percent of the time do you use a hands-free device?	251	72	32	18	7	23
While driving, what percent of the time do you talk on the phone in city streets (stopped at a light)?	207	118	31	15	21	11
While driving, what percent of the time do you talk on the phone in city streets (normal speed)?	250	80	36	16	18	3
While driving, what percent of the time do you talk on the phone in freeway driving (stop-and-go traffic)?	247	88	30	14	15	9
While driving, what percent of the time do you talk on the phone in freeway driving (normal speed)?	260	79	31	17	14	2
What percent of the time do you talk on the phone while driving on the freeway at a normal speed?	260	80	33	13	17	0
While driving, what percent of the time do you send text messages in city streets (stopped at a light)?	274	69	27	14	6	13
While driving, what percent of the time do you send text messages in city streets (normal speed)?	308	55	18	12	8	2
While driving, what percent of the time do you send text messages in freeway driving (stop-and-go traffic)?	296	53	28	9	13	4
While driving, what percent of the time do you send text messages in freeway driving (normal speed)?	312	57	13	10	9	2
While driving, what percent of the time do you send text messages when stopped at a red light?	263	66	29	15	9	21
While driving, what percent of the time do you use a GPS device?	204	90	43	14	17	35
While driving, what percent of the time do you use a portable music player?	224	73	32	18	16	40
While driving, what percent of the time do you use a laptop/tablet?	365	22	7	8	1	0
While driving, what percent of the time do you use a smartphone application?	310	67	14	8	4	0
While driving, what percent of the time do you use other electronic devices?	320	60	14	7	2	0