Featured Research

from universities, journals, and other organizations

Graduated Driver Licensing Reduces Fatal Crashes By 11 Percent

Date:
July 3, 2006
Source:
Johns Hopkins University Bloomberg School of Public Health
Summary:
Researchers from the Johns Hopkins Bloomberg School of Public Health's Center for Injury Research and Policy and the Johns Hopkins School of Medicine report that graduated driver licensing programs reduce, by an average of 11 percent, the incidence of fatal crashes of 16-year-old drivers.

Graduated driver licensing programs reduce, by an average of 11 percent, the incidence of fatal crashes of 16-year-old drivers, according to a study by researchers from the Johns Hopkins Bloomberg School of Public Health’s Center for Injury Research and Policy and the Johns Hopkins School of Medicine. When examining the most comprehensive programs, which include at least five of seven components [see list below], the researchers found about a 20 percent reduction in fatal crashes involving 16-year-old drivers. The report was supported primarily by the National Highway Traffic Safety Administration (NHTSA) and in part by the Centers for Disease Control and Prevention.

“Graduated driver licensing programs are a popular way to reduce the risk of vehicle crashes for novice drivers. We already knew that the programs reduced crash rates of young drivers, but we didn’t know which programs were most effective in reducing risk,” said Susan P. Baker, MPH, lead author of the study and a professor in the Bloomberg School of Public Health’s Department of Health Policy and Management and Center for Injury Research and Policy. “After completing our study, it is clear that more comprehensive programs have the greatest effect.”

“This study strongly underscores the effectiveness of graduated licensing laws. To states searching for solutions to the tragic problem of fatal crashes involving teenagers, it provides extremely valuable new information,” said Nicole Nason, NHTSA Administrator.

Graduated driver licensing programs differ in each state. The Hopkins researchers based their analyses on the presence of the following components, chosen for analysis because they are commonly found in existing programs:

• A minimum age of 15 1/2 for obtaining a learner permit
• A waiting period after obtaining a learner permit of at least 3 months before applying for an intermediate license
• A minimum of 30 hours of supervised driving
• Minimum age of at least 16 years for obtaining an intermediate state license
• Minimum age of at least 17 years for full licensing
• A nighttime driving restriction
• A restriction on carrying passengers

The researchers used data from 1994-2004 collected by NHTSA’s Fatality Analysis Reporting System and the U.S. Census Bureau to examine various graduated driver licensing programs and fatal crash statistics in 36 U.S. states with graduated driver licensing programs and 7 without.

Comparing states with five program components to states without graduated driver licensing programs, the researchers reported an 18 percent reduction in fatal crashes involving 16-year-old drivers. Programs with six or seven components were associated with a 21 percent reduction. The researchers also found a 16-21 percent reduction in fatal crashes when programs included an age requirement in addition to a wait of at least three months before allowing teens to apply for their intermediate-stage license, plus nighttime driving restrictions and either 30 hours of supervised driving or passenger restrictions. The authors concluded that the most comprehensive graduated driver licensing programs result in the best reduction of fatal crashes of 16-year-old drivers.

In addition, the authors’ findings were strengthened by examining fatal crashes involving drivers aged 20-24 and 25-29. The researchers did not find a reduction in fatal crashes in these age groups. Graduated driver licensing restrictions primarily affect 16-year-olds, indicating that the changes were not associated with the overall driving environment that would also have influenced older drivers, explained co-author Li-Hui Chen, PhD.

“Annually, about 1,000 16-year-old drivers are involved in fatal crashes in the United States and traffic injury is the leading cause of death among adolescents. The effectiveness of graduated driver licensing programs in reducing fatal crashes of novice drivers is very robust across genders and geographic regions. Enhancing the enforcement of graduated driver licensing regulations could prevent more premature deaths,” said co-author Guohua Li, MD, DrPH.

Co-authors of the NHTSA report and Pediatrics study are Susan P. Baker, MPH, LiHui Chen, PhD, and Guohua Li, MD, DrPH.

“Graduated Driver Licensing Programs and Fatal Crashes of 16-year-old Drivers: A National Evaluation” will be published in the July 2006 issue of Pediatrics.

The study was supported by grants from the National Highway Traffic Safety Administration, Johns Hopkins Center for Injury Research and Policy and Centers for Disease Control and Prevention.


Story Source:

The above story is based on materials provided by Johns Hopkins University Bloomberg School of Public Health. Note: Materials may be edited for content and length.


Cite This Page:

Johns Hopkins University Bloomberg School of Public Health. "Graduated Driver Licensing Reduces Fatal Crashes By 11 Percent." ScienceDaily. ScienceDaily, 3 July 2006. <www.sciencedaily.com/releases/2006/07/060703084835.htm>.
Johns Hopkins University Bloomberg School of Public Health. (2006, July 3). Graduated Driver Licensing Reduces Fatal Crashes By 11 Percent. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2006/07/060703084835.htm
Johns Hopkins University Bloomberg School of Public Health. "Graduated Driver Licensing Reduces Fatal Crashes By 11 Percent." ScienceDaily. www.sciencedaily.com/releases/2006/07/060703084835.htm (accessed July 25, 2014).

Share This




More Matter & Energy News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins