Tuesday, May 10, 2016

Cell Phone Use While Driving Survey

Cell Phone Use While Driving Survey
By: Siyu Ji

Abstract

This report is over a survey, including both online and paper versions, on Texas Tech University students’ attitudes towards cell phone use while driving. The goal of this survey was to determine whether the responses of Texas Tech University students in our survey would be accordant with what had been found and stated by other researchers from previous studies, and to propose the best feasible solutions to solve relevant issues that we found from the survey. We sought a total of 229 Americans, 124 of them females and 105 of them males, to be our survey participants, and then input the data we collected into Excel. All six hypotheses we made have been confirmed. In order to decrease the potential highway safety threats, based on the results we got from our survey, we finally proposed three best feasible solutions for corresponding issues: (1) educate young people, especially those whose ages are less than 22, and introduce them  the potential driving safety threat that would be caused by using cell phones while driving as early as possible; (2) encourage people who seldom or never used cell phones while driving, to recommend people around them, like their friends, relatives, lovers, etc., not to use cell phones while driving; and (3) ask the government to use billboards, which say, “USE CELL PHONES AND DRIVE. DIE”, along the side of the road, to inhibit cell phone use while driving.



Introduction

The development of mobile telephone technology goes back as far as the 1940s. The basic technology for today’s cellular phone systems was developed in the United States in the 1970s. Full commercial use in the United States began in 1983 (Alleyne, 2011). With the number of cell phone users exponentially increasing in recent years, today an estimated 80 million persons own cellular telephones (Lang, 2015). Because of how dependent the college-aged generation is on mobile phones and social networking (Bjornsen, 2015), our team would like to figure out what Texas Tech University (hereafter referred to as TTU) students’ attitudes are toward cell phone usage in their daily life, and how cell phone use, traffic safety, GPA of TTU students (Matchan, 2015), and social interaction (Gross, 2014) are related to each other.
Since the rapid expansion in the use of cell phones and other mobile technology has led to concerns that their use in motor vehicles constitutes a growing highway safety threat (Strayer, et al., n. d.)., I will highlight the connection between cell phone use while driving and traffic safety in my own survey. Although the effect of cell phone use on traffic safety is unknown, cell phone conversation while driving still potentially contributes to the increasing number of traffic accidents in recent years (Drews, et al., 2004). Recent surveys have proposed several arguments based on their data. For example, the use of cell phones could turn into an addictive habit, some people used cell phones to lift their mood and they would panic or get angry if they did not have access to their phone (Kowalski, 2014); the percentage of cell phone talking had decreased from 2011 to 2013, while the percentage of texting had increased (Wilkinson, 2015); males use phones more for navigation while females use them more for social conversation during driving (Wilkinson, 2015); and teens are more likely to text while driving since they thought that texting while driving was less dangerous than drunken driving (Copeland, 2010; Wallace, 2015 June). In order to evaluate whether these arguments are true or not for TTU students, we created a survey and asked a total of about 229 TTU students to participate in the test.
The goals of testing were dual. First, it was initiated to determine whether TTU students are consistent with mega trends — would their performance in the test be the same as that of other participants in previous tests? Second, the test is conducted to prepare a prioritized list of the actual problems hidden under the connection between cell phone usage while driving and traffic safety threat.

Literature review and Hypothesis

In 2014, Kowalski discovered that the use of cell phones could turn into an addictive habit. She found that some people used cell phones to lift their mood, and they would panic or get angry if they did not have access to their phones. Since more and more technical smartphones came out, and since there was rapid expansion in the use of cell phones, I believed that TTU students would also quite rely on their cell phones, and will say that they will feel insecure, unsafe or even get annoyed when their cell phones get out of services.
I was also curious about whether there were any differences that existed in texting while driving between males and females. I didn’t find any reliable or valuable references correlated to this problem. But based on my own life experiences, I supposed that females would more likely be texters than males. I thought I would have more female drivers respond that they prefer texting while driving than male drivers in our questionnaire.
Wilkinson (2015) also proposed that female drivers had cell phone conversations and texting more than male drivers, while male drivers used cell phones while driving more for navigation. I supposed that, as Americans, TTU students had received similar education in the United States, and they should perform consistently with other Americans. Based on this assumption, I thought in our survey, TTU male students would say they used cell phones more for navigation while driving; however, TTU female students would respond they used cell phones more for conversations when they drove.
Copeland (2010) found that teens whose ages were from 14 to 17 were more likely to text while driving, since they thought that texting while driving was less dangerous than drunken driving. As teenagers, from all over the world, generally lack safety awareness, I thought it would also be true for TTU students. Therefore, I believed that TTU students would underestimate the danger of texting while driving.
Seo and Torabi (2004) established their conclusion based on the data they had collected. They commented that students who seldom or never used cell phones while driving had the strongest attitudes against cell phone usage while driving, whereas students who frequently checked their phones while driving held the lowest level of attitudes against using cell phone while driving. Since all American students have received the same type of education, I guessed that TTU students would have the same performance about their attitudes against cell phone usage while driving. Although I would not imagine how many of our survey participants would respond they never used cell phones while driving, I believed that these guys who never used phones while driving would strongly think it was dangerous or wrong to use cell phones while driving.

Methodology

The survey was conducted to investigate what TTU students’ attitudes were toward cell phone usage in their daily lives, and how cell phone use, traffic safety, GPA of TTU students and social interaction were related to each other. Since the rapid expansion in the use of cell phones and other mobile technology has led to concerns that their use in motor vehicles constitutes a growing highway safety threat (Strayer, et al., n. d.), I wanted to focus more on the connection between cell phone use while driving and traffic safety. I wanted to know the answers of these following questions.
First, were TTU students addicted to their cell phones? How would they feel when their phones died (been out of service)? Would they panic or get angry when they could not get access to their phones?
Second, did TTU students prefer texting to calling? Were there any differences existing between females and males?
Third, what were the purposes for TTU students in using cell phones while driving? Were there any differences between males and females?
Fourth, what were TTU students’ attitudes toward cell phone use while driving? Did any differences exist between teenagers and adults?
Fifth, was the comment “students who seldom or never used cell phones while driving had the strongest attitudes against cell phone usage while driving, whereas students who frequently checked their phones while driving held the lowest level of attitudes against using cell phone while driving”, proposed by Seo and Torabi (2004), consistent for TTU students?
Sixth, if any of TTU students checked their phones while driving, how often did they check their phones? Were there any differences among various conditions, such as driving on the open road and driving in Lubbock?
Before we actually started the survey, our writing class students had a discussion about how to carry out this survey. We intended to conduct the survey as a whole; however, half of us were interested in the cell phone usage, while others preferred studying peoples’ opinions about intercultural marriage. To be fair and keep the balance, as a result, we made a questionnaire, in both paper form and online form, which included five questions asking about the background of the target individual, fifteen questions about cell phone usage in daily life and twelve questions about people’s standpoints on intercultural marriage. The online form questionnaire was put on a website called “Survey Planet”.
Prior to any individual participating in any sort of investigation, we made an agreement about the necessary qualifications for target participants of the survey. Each of our writing class students agreed to find at least twelve participants in total. All of these twelve participants should be Americans, and where they came from didn’t matter, which meant the locations of our target participants’ hometowns wouldn’t affect the results of our survey. As our time and geographical limit on conducting this survey, we could only seek our target participants in Lubbock, whether on the TTU campus or off the TTU campus but still in Lubbock. Six of them should be females and another six of them should be males. The ages of the survey participants were not limited, which meant the ages of the survey participants might cover a range as large as possible.
Testing took place through March 28-April 7, 2016 in Lubbock. For the online form questionnaires, the website collected the data for us. For the paper form questionnaires, our writing class students collected them and input the answers for those questions into the website. But there was one unavoidable issue when we input those answers. When these participants filled in the paper form questionnaires, they had the opportunity to avoid any questions that they were not willing to respond to. However, when we input these responses, the website did not allow us to leave it blank in any responses to the questions; thus, we, the data inputters, subjectively filled in these blanks based on our own experiences, and this caused the unreliability and invalidity of some of the data.
We eventually got 229 responses in total, and Survey Planet (the website we used) generated statistics and graphs based on the data we had collected for us.

Results


There were 229 participants in total taking part in this survey. 105 of them (45.9%) were male; 124 of them (54.1%) were female. As we did not put a limit on the ages of the survey participants, we got a large age range of these participants, and the questionnaire we made divided them into five groups, shown in the following figure (Figure 1). From the figure we can see more than half of the total participants fell in the age range of 18 to 22. 



Figure 1. Age range of the survey participants.
Kowalski (2014) stated that the use of cell phones can turn into an addictive habit, since she had found that some people used cell phones to lift their mood and they would panic or get angry if they could not have access to their phone. And the data we collected from our questionnaires showed that Lubbock people behaved in the same way as what Kowalski had concluded. Our data showed that only 31 out of 229 (13.5%) participants said they had no feelings when they could not get access to their phones. However, all the other participants would panic or get angry when they had the same situations. From figure 2 we can see, over half of our participants (58.5%) said they felt annoyed when their phones had died; 93 out of 229 (40.6%) of our participants said they felt insecure, unsafe or even like they had lost their limbs when they could not use their phones. 


Figure 2. Peoples’ feelings when they do not have access to their phones.
We used to believe that people would prefer texting to talking recently, based on the conclusion that the percentage of cell phone talking had decreased from 2011 to 2013, while the percentage of texting had increased, which was proposed by Wilkinson in 2015. And the data we collected confirmed this (Figure 3). Our data showed that 126 out of 229 participants preferred texting over calling, and 103 of them said they liked calling more. Although the ratio of people who prefer texting to people who prefer calling is 55%:45%, which is nearly half to half, it still showed the facts that more people liked texting better, which is accordant with our assumption. 


Figure 3. Ratio of people prefer texting to people prefer calling.
We also thought that females would more likely be texters than males. This supposition was constructed based on our own experiences, and no reliable references had been found. Our data (Figure 4) showed the fact that our assumption was concordant with Lubbock people’s behaviors. From this figure, we can see, 45.7% of male survey participants preferred calling than texting, while 62.9% of female participants preferred texting more. The contrast between male texters and female texters was obvious, and it confirmed our assumption that females would more likely be texters.

Figure 4. Percentage ratio of male texters vs. female texters.
Based on the conclusion made by Wilkinson in 2015, in which he proposed that female drivers have cell phone conversations and texting more than male drivers, while male drivers use cell phone while driving more for navigation, we believed that Lubbock people would report similarly to this comment. The data we collected kept consistency with Wilkinson’s comments. 95 out of 105 males (90.5%) used cell phones for navigation during driving, while only 68 out of 124 females (54.8%) used cell phones for navigation during driving. 66 out of 105 males (62.9%) reported having cell phone conversations while driving; however, 86 out of 124 females (69.4%) used cell phones for texting and speaking when they drove a vehicle. And figure 5 gave us the obvious contrast of purposes of using cell phones while driving between males and females. Both the figure and the numbers we had supported the idea that Lubbock peoples’ behaviors kept consistency with what Wilkinson had proposed in 2015.

Figure 5. Purposes of males vs. females in using cell phones while driving.
The discovery found by Copeland in 2010 showed that teens whose ages are from 14 to 17 were more likely to text while driving, since they thought that texting while driving was less dangerous than drunken driving. As only one of our participants fell in the age range of less than 18, we decided to compare Lubbock people’s attitudes toward cell phone use while driving by dividing them into two groups: group A included people whose ages fell in the range of less than 22, and group B included people whose had ages greater than 22. And as Q13 in our questionnaire had more complex choices rather than simple yes/no, we also decided to divide these responses into two types: type I included always, usually, and often, and type II included sometimes and not generally. The data we collected confirmed Copeland’s conclusion. 33 out of 122 of group A participants (27%), whose ages were less than 22, rarely thought using cell phones while driving was dangerous. However, only 17 out of 107 of group B participants (16%), whose ages fell in the age range of greater than 22, rarely thought that cell phone using while driving was wrong.

Figure 6. The frequency that Lubbock people felt it was dangerous or wrong to use cell phones while driving.
Seo and Torabi proposed that students who seldom or never used phones while driving had the strongest attitudes against cell phone usage while driving, whereas students who frequently checked their phones while driving held the lowest level of attitudes against using cell phone while driving, in 2004. We believed the comment made by Seo and Torabi would be true for Lubbock people, which means we thought that Lubbock people who seldom or never used cell phones while driving would strongly disagree with using cell phones while driving since they would constantly feel it was wrong to use phones while driving. And the data we got from our questionnaires confirmed that our assumption was true. 12 out of 13 people (92.3%) who never use cell phones while driving constantly felt it was wrong or dangerous to use cell phones while driving. Although we only had 13 out of 124 participants who never use cell phones when they drove vehicles, which might make the data not strongly reliable, we could still believe what Seo and Torabi had proposed, that people who seldom or never used while driving had the strongest attitudes against cell phone usage while driving, was consistent for Lubbock people.

Figure 7. The frequency of people who never use cell phones while driving and felt it was dangerous or wrong using cell phone while driving.
We assumed that people who did check or use their cell phones while driving would perform differently under different conditions, which means we believed that when people drove on an open road they would check or use cell phones more frequently than when they drove in Lubbock city. This assumption was just made based on our own experiences; no reliable or valuable references had been found. And the statistics and graphs we got from the website we used proved our hypothesis was true for Lubbock people. From the following two figures (Figure 8, 9), we can see that, while driving in Lubbock city, only 5 out of 229 participants (2.2%) checked their phones a lot, and only 70 out of 229 participants (30.5%) occasionally used their phones. However, when they drove vehicles on an open road, the numbers increased. 11 out of 229 participants (4.8%) used cell phones a lot while driving, and 101 out of 229 participants (44.1%) used cell phones while driving occasionally.

Figure 8. The frequency of Lubbock people checking cell phones while driving in Lubbock city.

Figure 9. The frequency of Lubbock people checking cell phones while driving on an open road.
In conclusion, all of our five hypotheses, whether they were made based on the conclusions by other authors previously or were made just by our own experiences and no reliable references had been found, had been confirmed to be consistent with Lubbock people’s attitudes and behaviors.

Discussion

On a general scale, the results of our survey revealed that people became more and more addicted to their cell phones, and they would panic or even get angry when they could not get access to their phones. And this addiction to cell phones became even more serious in the situation of driving vehicles. People would not put their phones down while driving. Instead, they would continue using their cell phones for various reasons, such as navigation, texting, calling, listening to music, etc. And this behavior of people does potentially constitute a growing highway safety threat. Besides these two conclusions, we also found out these following findings:
First, students whose ages were less than 22 were more likely to use cell phones while driving, since they rarely thought using cell phones while driving was dangerous. This conclusion we made is accordant with the discovery found by Copeland in 2010, in which he stated that teens were more likely to text while driving, since they thought that texting while driving was less dangerous than drunken driving. It is obvious that younger generations have less awareness of the possible perniciousness of cell phone use while driving than the older generations. In order to improve the consciousness of potential danger of cell phone use while driving of young people, especially of those whose ages are less than 22, we think it is important to educate them and introduce the potential driving safety threat that would be caused by using cell phones while driving to them, as early as possible.
Second, 12 out of 13 (92.3%) of our survey participants who never use cell phones while driving constantly felt it was wrong or dangerous to use cell phones while driving. This finding we found kept consistent with what Seo and Torabi had proposed in 2004, in which they said that people who seldom or never used phones while driving had the strongest attitudes against cell phone usage while driving. It is good news for us to see we still had some people, although not a lot, who never used cell phones while driving, and they had strong attitudes against using phones while driving. As these people strongly think it is dangerous or wrong to use cell phones while driving, I think it would be helpful to reduce the increasing highway safety threat, if these people advise people around them, like their friends, relatives, lovers, etc., to turn off their phones while driving. One person advice people around him/her, and then the person who has been advised can continue advising people around him/her. One by one, this good behavior will be passed on.
Third, people who did check or use their cell phones while driving would perform differently under different conditions. We found that when people drove on an open road they would check or use cell phones more frequently than when they drove in Lubbock city. This statement confirmed our assumption about the frequency of people checking their phones when they drove under different surroundings, although this assumption was just made based on our own experiences and no reliable references could be found. We think one of the possible reasons that people behaved so differently on checking their phones while driving is that they thought it was more safe and relaxed to drive on an open road, as there were fewer cars and fewer red lights that needed to be paid attention to, than when driving in Lubbock city. Although we have not come out with any feasible or useful methods to solve this problem on our own, we get inspiration from the billboards which were built along the side of the highway by Lubbock government, which said “DRINK AND DRIVE. GO TO JAIL”. We think it might also be helpful and could inhibit cell phone use while driving, if the government built another kind of billboards, which say “USE CELL PHONES AND DRIVE. DIE”, along the side of the road.

Conclusion

People have become more and more addicted to using cell phones recently; they feel insecure, unsafe or even annoyed when their phones are out of service. And what is more dangerous is that people do not put their phones down while driving. Instead, they continue using their cell phones for various reasons, such as navigation, texting, calling, listening to music, etc. And this rapid expansion in the cell phone use in motor vehicles does potentially constitute a growing highway safety threat. Based on the findings we found from our survey, we have made these corresponding solutions:
First, we found that younger generations are less aware of the potential danger of cell phone using while driving than the older generations. We recommend that it would be really important to educate teens, whose ages are less than 22, and introduce the potential driving safety threat that would be caused by using cell phones while driving to them, as early as possible.
Second, our data showed that people who seldom or never used phones while driving had the strongest attitudes against cell phone usage while driving. We highly encourage these people to recommend people around them, like their friends, relatives, lovers, etc., not to use cell phones while driving.
Third, our survey participants responded that when they drove on an open road they would check or use cell phones more frequently than when they drove in Lubbock city. We think it might be helpful and could inhibit cell phone use while driving, if the government built more billboards, which says “USE CELL PHONES AND DRIVE. DIE”, along the side of the road.
Although we only have 229 participants, which is a small number of participants for a survey, which makes our data not quite reliable, we still have some valuable findings and have given our best solutions related to those issues. Further investigations need to be conducted, more participants will be needed, in order to figure out the source of people’s addiction to cell phones, and then find out the best way to solve out cell phone use while driving issues.


Appendix

ESL 5315 Academic Writing Thank you for participating in our survey on cell phones and intercultural marriages! Feel free to make any comment.
1. ___ M ___ F
2. ___ single ___ married ____ in committed relationship ____ divorced
3. Age ___<18 ___18-22 ___ 23-27 ____28-35 ____ >35
4. (check all that apply) ___ from Texas ____ from USA, not Texas ____ international
 ___ from Lubbock ____ from urban area, bigger than LBK ____ from city or town smaller than LBK  ____ from farm, ranch, countryside
5. Describe your major, occupation or field (check more than one if appropriate)
 ___ hard sciences ___ math ___ English/rhetoric/literature
 ___ creative arts ___ design ___ social sciences ___ other (name) ____________
6. How many hours do you spend on the cell phone per day?
 ___ less than 30 minutes ___ 1-2 hours ___ 3-4 hours ___ > 4 hours
7. How many times do you check your phone in an average 50 minute class?
 ___ never ___ 1-3 times ____ 4-10 times >10 times ___ constantly
8. What is usually your purpose of using the cell phone in class?
 ___ browsing ___ texting ___ checking social media ___ other _________________________________
9. Do you feel that checking cell phones in class hurts your grade?
 ___ Yes ____ No
10. When you are driving in Lubbock, how often do you check or use your phone?
 ___ never ___ only when stopped ____ occasionally ___ a lot
11. When you are driving on the open road, how often do you check or use your phone?
 ___ never ___ only when stopped ____ occasionally ___ a lot
12. What is your purpose in using cell phones while driving? Check what applies.
 ___ GPS ___ texting ___ speaking ___ social media ____ music ___ never use phone
13. Do you feel using the phone when driving is wrong or dangerous?
 ___ always ___ usually _____ often ___ sometimes ___ not generally
14. Do you think excessive use of cell phone is reducing social interaction?
 ___ yes ___ no
15. Have you ever had stress on a date, or difference of opinion on phone use?
 ___ yes, I used it more than date wanted ___ yes, date used it more than I wanted ___ no
16. Do you teach parents, aunts & uncles, or grandparents how to use cell phones?
 ___ Yes ___ No
17. Which do you generally prefer, texting or calling? ___ texting ___ calling
19. How do you feel when your cell phone has died? (check what applies)
 ___ no feeling ___ annoyed ___ insecure ___ unsafe ___ like I’ve lost a limb
20. Has a cell phone ever caused one of these for you or someone you know?
 ___ excess stress ___ sleep disorder
21. Do you use your phone for either of these? Check what’s appropriate.
 ___ religious purposes ___ banking ___ shopping, i.e. on Amazon
22. Do you have experience with intercultural/interracial marriage or relationships?
 ___ no ___ have been in one ___ am in one now ___ grew up in one
23. Would/Did your parents support your intercultural/interracial marriage?
 ___ yes ___ no ___ yes with warning or strong advice
24. Would you support your child’s intercultural/interracial marriage?
 ___ yes ___ no ___ yes with warning or strong advice
25. Do you feel more supportive of it than your parents?
 ___ more supportive ____ less supportive ___ about the same
26. Do you think intercultural marriage is good for society?
 ___ yes ___ no ___ doesn’t make a difference
27. What do you think are the most difficult aspects for people in intercultural marriages?
 ___ religion ___ language differences ___ food ___ other _____________________________________
28. What kinds of things could cause arguments in intercultural marriages?
 ___ food ___ religion ___ traditions ___ ways of communicating ___ other _______
28. What would you be willing to sacrifice to maintain an intercultural marriage? (choose as many as apply)
 ___ nothing ___ some food preferences ___ seeing family as often as I’d like
 ___ live in the town I’d like best ___ being able to have the best job or job I’d like
 ___ having a family of different religion from mine ___ would sacrifice anything for love
29. What do you think are the most beneficial aspects of intercultural marriage? (check what applies)
 ___ none ___ children have better education ___ become more open-minded
 ___ learn more about cultures, travel more ___ other (name) ________________________________
30. How would you characterize children of intercultural/interracial marriages, generally? Check any.
 ___ advantaged by being bilingual/bicultural/biracial
 ___ advantaged by being more adaptive to change & cultures
 ___ teased or ridiculed by other kids
 ___ more open-minded
 ___ confused about religion
 ___ less interested in religion
31. How do you feel about pastoral counseling for intercultural couples? (Check any that apply)
 ___ necessary ___ always helpful ___ sometimes helpful
 ___ not helpful ___ might cause more harm than good
33. If you are in an intercultural marriage, would you do it again, if you could go to the past?
 ___ yes ___ no

References

Bjornsen, C. (2015 August). College students’ test scores suffer with cell phone use in class. Longwood researcher finds, Longwood University. Retrieved on February 11, 2016, from http://www.longwood.edu/2015releases_62426.htm
Copeland, J. (2010, September). Awareness Gap on the Road Texting. USA Today. Retrieved on February 16, 2016, from http://usatoday30.usatoday.com/printedition/news/20100920/texting20_st.art.htm
Drews, F. A., Pasupathi, M., and Strayer, D. L. (2004). Passenger and Cell-phone Conversations in Simulated Driving: Proceedings of the Human Factors and Ergonomics Society 48th Annual Meeting, pp. 2210-2212.
Gross, G. (2014, June). Teens and technology: Managing cell phone usage. The Huffington Post. Retrieved on February 11, 2016, from http://www.huffingtonpost.com/dr-gail-gross/teens-and-technology-managing-cell-phone-usage_b_5187412.html
Kowalski, K. (2014 September). Watch out: Cell phones can be addictive. Student Science. Retrieved on Feb 9, 2016, from https://student.societyforscience.org/article/watch-out-cell-phones-can-be-addictive
Lang, N. (2015 August). Americans can’t put down our cell phones-and it’s actually killing us. The Week. Retrieved on February 9, 2016, from http://theweek.com/articles/572481/americans-cant-down-cell-phones--actually-killing
Matchan, L. (2015 June). Schools seek balance for Cell Phones in class: Are they a teaching too or distraction? The Boston Globe. Retrieved on February 7, 2016, from https://www.bostonglobe.com/lifestyle/style/2015/06/15/cellphones-school-teaching-tool-distraction/OzHjXyL7VVIXV1AEkeYTiJ/story.html
Strayer, D. L., Drews, F. A., Albert, R. W., and Johnston, W. A. (n. d.). Cell Phone Induced Perceptual Impairments During Simulated Driving. Univ. of Utah. Retrieved on February 5, 2016, from: http://web.arizona.edu/~vas/297/driven.htm
Seo, D. C. and Torabi, M. R. (2004 November). The impact of in-vehicle cell-phone use on accidents or near-accidents among college students. Journal of American College Health, v. 53 (3), pp. 101-107. doi:10.3200/JACH.53.5101-108PMID:15571112.
Wallace, K. (2015 June). Brutally honest: How to keep your teens from texting and driving. CNN. Retrieved February 11, 2016, from http://www.cnn.com/2015/02/17/living/feat-brutally-honest-teens-texting-driving/
Wilkinson, M. K. (2015, February). Prevalence and Correlates of Cell-phone Use among Texas Drivers. Elsevier. Retrieved on February, 24, 2016, from http://www.sciencedirect.com/science/article/pii/S2211335515000200

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