Teenage drivers have the highest proportion of cellphone-related crashes, and traffic crashes are their leading cause of death. The death rate among drivers age 14-17 years hiked 17% from 2014 to 2016 nationally, with increasing cellphone-related distracted-driving as a suggested contributor. While 40 states and DC had enacted young-driver phone laws to ban all cellphone use or handheld use by September 2017, provisions vary greatly (e.g., all cellphone ban vs. handheld phone ban, all license types vs. learner permits/intermediate licenses). The extent to which young-driver phone bans and their specific provisions reduce texting and crashes is unknown. Therefore, we propose a four-year project with objectives to determine, across multiple states, the impact of young-driver phone bans and universal phone bans (i.e., for all ages) on texting or emailing while driving, and the rates of injury and fatal crashes among teens (<18 years). We hypothesize that the effectiveness of laws is impacted by certain provisions.
The specific aims of this renewal application are to determine which provisions of young-driver phone bans and universal texting bans reduce teen texting or emailing while driving (Aim 1), and to identify which provisions of young-driver phone bans and universal phone bans reduce crashes involving teen drivers (<18 years) (Aim 2). Cellphone ban provisions to be examined include: 1) scope of banned activities (texting, handheld phone use, all phone use); 2) affected license types (learner permit / intermediate license, all licenses); 3) mode of enforcement (primary enforcement?officers can stop a vehicle for phone use only; or secondary enforcement?driver must first be cited for another infraction); 4) initial monetary amount of fine; 5) increases in fines for multiple citations; and 6) whether an infraction delays full licensure.
The aims will be accomplished by combining and analyzing survey, legislative, economic, population, and crash data from various systems maintained by federal, state, and private agencies. Random-effects logistic and quasi-Poisson models will be used to estimate the effects of state-level laws on individual-level phone use and state-level crash rates. Level of enforcement will be examined as a mediator in the path from cellphone laws to changes in cellphone-use-while-driving behaviors, as well as changes in injuries, and deaths related to cellphone use while driving. Guided by strong preliminary data and our last R01, this study is also innovative by using multiple measures of impact include texting while driving, fatal crashes, and driver injuries. This project is significant, because its findings can inform states' efforts to develop/improve laws to reduce phone-related crashes, injuries, and deaths involving teen drivers.

Public Health Relevance

Cellphone-related distracted driving is a prevalent public health safety hazard, particularly for teenage drivers whose cellphone use and crash rates are high, and death rates are increasing. The proposed research will determine the effectiveness of specific provisions of young-driver phone bans and universal phone bans (i.e., for all age drivers) in reducing young-driver phone use, and subsequent crashes, injuries, and deaths. It will delineate an optimal law to inform states that are either enacting new or enhancing existing legislation to reduce teenage driver cellphone use and traffic crashes; and provide much-needed scientific evidence to inform other policy and prevention efforts designed to protect the travelling public.

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Research Project (R01)
Project #
5R01HD074594-07
Application #
10000115
Study Section
Community Influences on Health Behavior Study Section (CIHB)
Program Officer
Maholmes, Valerie
Project Start
2013-01-01
Project End
2022-08-31
Budget Start
2020-09-01
Budget End
2021-08-31
Support Year
7
Fiscal Year
2020
Total Cost
Indirect Cost
Name
Nationwide Children's Hospital
Department
Type
DUNS #
147212963
City
Columbus
State
OH
Country
United States
Zip Code
43205
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Rudisill, Toni M; Smith, Gordon; Chu, Haitao et al. (2018) Cellphone Legislation and Self-Reported Behaviors Among Subgroups of Adolescent U.S. Drivers. J Adolesc Health 62:618-625
Rudisill, Toni M; Zhu, Motao (2017) Hand-held cell phone use while driving legislation and observed driver behavior among population sub-groups in the United States. BMC Public Health 17:437
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Zhu, Motao; Zhao, Songzhu; Long, D Leann (2016) Brief Report: The Association of Graduated Driver Licensing with Nondriver Transport-related Injuries Among Adolescents. Epidemiology 27:620-3
Rudisill, Toni M; Zhu, Motao; Davidov, Danielle et al. (2016) Medication use and the risk of motor vehicle collision in West Virginia drivers 65 years of age and older: a case-crossover study. BMC Res Notes 9:166
Rudisill, Toni M; Zhu, Motao; Abate, Marie et al. (2016) Characterization of drug and alcohol use among senior drivers fatally injured in U.S. motor vehicle collisions, 2008-2012. Traffic Inj Prev 17:788-95
Rudisill, Toni M; Zhu, Motao (2016) Who actually receives cell phone use while driving citations and how much are these laws enforced among states? A descriptive, cross-sectional study. BMJ Open 6:e011381
Erhardt, Taryn; Rice, Thomas; Troszak, Lara et al. (2016) Motorcycle helmet type and the risk of head injury and neck injury during motorcycle collisions in California. Accid Anal Prev 86:23-8
Zhu, Motao; Rudisill, Toni M; Heeringa, Steven et al. (2016) The association between handheld phone bans and the prevalence of handheld phone conversations among young drivers in the United States. Ann Epidemiol 26:833-837.e1

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