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JUST RELEASED: Research Notes, Crash*Stats & Reports

  • Evaluation of the Effectiveness of LED Stop Lamps and LED CHMSL for Reducing Rear Impacts, Analyses of State Crash Data (DOT HS 811 712), The purpose of this report is to analyze the crash-reduction benefits of LED stop lamps and LED center high-mounted stop lamps (CHMSL) using real-world crash data. Previous work on this subject included laboratory experiments that suggest LED lamps were more beneficial than incandescent lamps at preventing rear-impact collisions. NHTSA statistically compared the overall ratio of rear-impact crashes to a control group of frontal impacts before and after the switch to LED.
  • NCSA Report "Occupant Restraint Use in 2011: Results from the National Occupant Protection Use Survey Controlled Intersection Study" (DOT-HS-811-697), This report presents results from the 2011 National Occupant Protection Use Survey (NOPUS) Controlled Intersection Study. The 2011 NOPUS found that restraint use for all children from birth to 7 years old increased significantly from 89 percent in 2010 to 91 percent in 2011. Significant increases in child restraint use in 2011 occurred among children traveling in vans and SUVs, in the Northeast, and during weekends. Among occupants 8 and older, seat belt use in front seats continued to be lower among 16- to 24-year-olds than other age groups. Seat belt use in rear seats stood at 74 percent in 2011.
  • NCSA Crash*Stats 'Early Estimate of Motor Vehicle Traffic Fatalities for The First Nine Months (January–September) of 2012' (DOT HS 811 706), A statistical projection of traffic fatalities for the first nine months of 2012 shows that an estimated 25,580 people died in motor vehicle traffic crashes. This represents an increase of about 7.1 percent as compared to the 23,884 fatalities that occurred in the first nine months of 2011.
  • NCSA Crash*Stat: 'State Motor Vehicle Fatalities and State Alcohol-Impaired Motor Vehicle Fatalities, 2011' (DOT-HS-811-699), In 2011, 32,367 people lost their lives on America’s road¬ways in motor vehicle crashes. This figure is 1.9 percent lower than the 32,999 people who died in crashes in 2010 (632 fewer fatalities in 2011). Alcohol-impaired-driving fatalities declined by 2.5 percent in 2011. An alcohol-impaired-driving fatality is defined as a person killed in a crash involving a driver or motorcycle rider (opera¬tor) with a blood alcohol concentration of .08 grams per deciliter or greater. This percentage decrease was greater than the percentage decrease in overall motor vehicle crash fatalities from 2010 to 2011. The 9,878 alco¬hol-impaired-driving fatalities in 2011 accounted for 31 percent of overall fatalities, the same percentage of overall fatalities as in 2010.
  • NCSA'S Traffic Safety Fact Sheet 2011 Data 'Alcohol-Impaired Driving' (DOT-HS-811-700), Traffic fatalities in alcohol-impaired-driving crashes decreased by 2.5 percent from 10,136 in 2010 to 9,878 in 2011. The alcohol-impaired-driving fatality rate per 100 million vehicle miles traveled (VMT) remained at 0.34 in 2011 (same as in 2010).
  • NCSA Research Note: "2011 Motor Vehicle Crashes: Overview" (DOT-HS-811-701), In 2011, 32,367 people died in motor vehicle traffic crashes in the United States—the lowest number of fatalities since 1949, when there were 30,246 fatalities. This was a 1.9-percent decline in the number of people killed, from 32,999 in 2010, according to NHTSA’s 2011 Fatality Analysis Reporting System (FARS). In 2011, an estimated 2.22 million people were injured in motor vehicle traffic crashes, compared to 2.24 million in 2010 according to NHTSA’s National Automotive Sampling System (NASS) General Estimates System (GES).
  • 2011 FARS/NASS/GES Coding & Validation Manual (DOT-HS-811-694), The 2011 Fatality Analysis Reporting System (FARS) and National Automotive Sampling System (NASS) General Estimates System (GES) Coding and Validation Manual.
  • 2011 FARS Analytical User’s Manual 1975-2011 (DOT-HS-811-693), The FARS Analytical User’s Manual provides data elements for the FARS data file.
  • NCSA Research Note: “Estimating Lives Saved by Electronic Stability Control, 2008–2010 In 2010” (DOT-HS-811-634), In 2010, electronic stability control (ESC) saved an esti¬mated 497 lives among passenger car (PC) occupants, and 366 lives among light truck and van (LTV) occu¬pants, for a total of 863 lives saved among passenger vehicle (PV) occupants. This lives-saved estimate is a substantial increase over the 705 lives saved in 2009 and the 634 lives-saved estimate for 2008. In recent years, the percentage of passenger vehicles equipped with ESC systems has increased significantly.
  • NCSA Research Note 'Seat Belt Use in 2012 – Overall Results' (DOT-HS-811-691), Seat belt use in 2012 reached 86 percent, a significant increase from 84 percent in 2011. This result is from the National Occupant Protection Use Survey (NOPUS), which is the only survey that provides nationwide probability based observed data on seat belt use in the United States. The NOPUS is conducted annually by the National Center for Statistics and Analysis of the National Highway Traffic Safety Administration. Seat belt use has shown an increasing trend since 1994, accompanied by a steady decline in the percentage of unrestrained passenger vehicle (PV) occupant fatalities during daytime.
  • Find All NCSA Studies, Reports & Publications in CATS, Our Customer Automated Tracking System (CATS) is where you will find: • Traffic Safety Fact Sheets • FARS/GES Reports • Research Notes and Crash*Stats • Technical Reports • Annual Assessments • Documentation and Manuals for FARS, GES, and NASS-CDS. Customers may also leave a customized data request if you are unable to find what you are looking for.

National Center for Statistics and Analysis (NCSA)  

NCSA, an office of the National Highway Traffic Safety Administration, is responsible for providing a wide range of analytical and statistical support to NHTSA and the highway safety community at large.

Data Modernization

NHTSA is conducting a comprehensive review of the National Automotive Sampling System (NASS) research design and data collection methods as part of a major effort to modernize the system. Users of NASS and crash data may comment on the future utility of current data elements, recommend additional data elements and attributes, and describe their anticipated data needs.