Using naturalistic driving data to examine drivers' seatbelt use behavior: Comparison between teens and adults

ProblemTeens and young drivers are often reported as one driver group that has significantly lower seatbelt use rates than other age groups.ObjectiveThis study was designed to address the questions of whether and how seatbelt-use behavior of novice teen drivers is different from young adult drivers and other adult drivers when driving on real roads.MethodDriving data from 148 drivers who participated in two previous naturalistic driving studies were further analyzed. The combined dataset represents 313,500 miles, 37,695 valid trips, and about 9500 h of driving. Drivers did not wear their seatbelts at all during 1284 trips. Two dependent variables were calculated, whether and when drivers used seatbelts during a trip, and analyzed using logistic regression models.ResultsResults of this study found significant differences in the likelihood of seatbelt use between novice teen drivers and each of the three adult groups. Novice teen drivers who recently received their driver's licenses were the most likely to use a seatbelt, followed by older drivers, middle-aged drivers, and young drivers. Young drivers were the least likely to use a seatbelt. Older drivers were also more likely to use seatbelts than the other two adult groups. The results also showed that novice teen drivers were more likely to fasten their seatbelts at the beginning of a trip when compared to the other three adult groups.SummaryNovice teen drivers who were still in the first year after obtaining their driver's license were the most conservative seatbelt users, when compared to adult drivers.Practical applicationFindings from this study have practical application insights in both developing training programs for novice teen drivers and designing seatbelt reminder and interlock systems to promote seatbelt use in certain driver groups.     

Does the built environment affect when American teens become drivers? Evidence from the 2001 National Household Travel Survey

Problem

Motor vehicle crashes are the most common cause of death for American adolescents. However, the impact of where teens live on when they begin driving has not been studied.

Method

Data from the 2001 National Household Travel Survey were used to estimate the effect of residential density on the driver status of teens aged 16 to 19 years after matching on demographic characteristics.

Results

Controlling for demographic characteristics, 16 and 17 year old teens in high density neighborhoods had driver rates 15 percentage points below teens living in less dense areas (p < 0.001). The effect for 18 and 19 year olds was a 9 percentage point decrease (p < 0.001).

Summary

These results suggest teens living in less dense and more sprawling communities initiate driving at a younger age than comparable teens in compact areas, placing them at increased risk for crash related injuries. Impact on Industry: The role of environmental factors, such as neighborhood walkability and provision of transit, should be considered in young driver programs.     

Talking with teens about traffic safety: Initial feasibility,acceptability, and efficacy of a parent-targeted intervention for primary care settings

IntroductionThe aims of the current pilot study were to evaluate the feasibility, acceptability, and preliminary efficacy of the Talking with Teens about Traffic Safety Program. The program consists of a clinic-based health coaching session with parents of adolescents at their annual well-child visit to promote parent-teen communication about teen driver safety including: a Parent Handbook that is designed to serve as a primer on teen driver safety and facilitate parent-teen communication on a variety of teen driver topics; an interactive practice driving toolset; and an endorsement of the materials by the primary care provider.MethodFifty-four parent-teen dyads (n = 108 total) were recruited from a primary care practice. Dyads were randomized (1:1) into a treatment group or a usual care group. Implementation fidelity was assessed using checklists completed by health coaches and parent interviews. After 6 months, parents reported how often they talked with their teen about 12 safe driving topics (e.g., state graduated driver licensing laws).ResultsParents in the treatment group reported more frequent discussions than parents in the control group on 7 out of the 12 topics. Fidelity data indicate that 100% of sessions were implemented as designed and were acceptable to parents.ConclusionsThe program was feasible to administer and there was evidence for preliminary efficacy. Generally, effects were larger for more infrequently discussed topics, which is to be expected due to the potential for ceiling effects on more commonly discussed topics (e.g., distracted driving). A larger multi-site study is warranted.Practical applicationsThe results from this pilot study provide support for implementation fidelity and establish a proof-of-concept for the Talking with Teens about Traffic Safety Program. The results provide guidance for developing partnerships with pediatricians and parents to develop parent-teen communication interventions on injury prevention topics.