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NHTSA - Vehicle Safety Research

rosaP Repository & Open Science Access Portal

This collection includes reports from the National Highway Traffic Safety Administration (NHTSA) Office of Vehicle Safety Research program. NHTSA’s Office of Vehicle Safety Research program's mission is to strategize, plan, and implement research programs to continually further the Agency's goals in reduction of crashes, fatalities, and injuries. Research is prioritized based on potential for crash/fatality/injury reductions and is aligned with Congressional Mandates, DOT, and NHTSA goals. More information on the program can be found at https://www.nhtsa.gov/research-data. Bookmark this collection: https://rosap.ntl.bts.gov/collection_nhtsa_vsr or https://doi.org/10.21949/1530844.

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Showing 21 - 40 of 237 results
  • A Teardown Study of FloodDamaged Electric Vehicles
    A Teardown Study of Flood-Damaged Electric Vehicles
    Tanim, Tanvir ;
    Prucha, Tom
    2024-11-01 | PDF
    The objective of this research was to perform a teardown analysis on ten flood-damaged electric vehicles (EVs) recovered after Hurricane Ian in 2022. Nine of the vehicles retained a high state of charge, despite the water exposure and 10 months of storage. Upon inspection, infiltration pathways of saltwater into the battery packs were identified. T ...
  • LightDuty Vehicle Transmission Benchmarking 2021 Toyota RAV4 Prime P810 Transmission and Q610 Rear Axle
    Light-Duty Vehicle Transmission Benchmarking – 2021 Toyota RAV4 Prime P810 Transmission and Q610 Rear Axle
    Wileman, Craig
    2024-10-01 | PDF
    This report benchmarks the 2021 Toyota RAV4 Hybrid P810 electric continuously variable transmission and its Q610 electric rear axle. Benchmarking tasks include component and system level performance of overall transmission efficiency, torque converter performance, in-gear inertia maps, oil pump mapping, ratio determination, and shifting and convert ...
  • Assessment of Driver Monitoring Systems for Alcohol Impairment Detection and Level 2 Automation
    Assessment of Driver Monitoring Systems for Alcohol Impairment Detection and Level 2 Automation
    Prendez, David M ;
    Brown, James L.
    2024-09-01 | PDF
    This report reviews and assesses driver monitoring systems (DMS) and related technologies for alcohol impairment detection and Level 2 partial driving automation systems. A key focus reviewed systems being developed to detect alcohol-caused driving impairment as well as systems that can precisely estimate blood alcohol concentrations. These were cl ...
  • WorldSID50M Repeatability and Reproducibility of Qualification Tests
    WorldSID-50M Repeatability and Reproducibility of Qualification Tests
    Rhule, Dan
    2024-09-01 | PDF
    In July 2022 NHTSA published a report summarizing the repeatability and reproducibility evaluation of the Worldwide Harmonized Side Impact Dummy 50th percentile adult male dummy (WorldSID-50M) in qualification tests. After minor revisions to the WorldSID-50M’s thorax, NHTSA determined that an updated assessment of the WorldSID-50M’s repeatability a ...
  • Crash Safety Considerations for SpeedLimited ADS Shuttles
    Crash Safety Considerations for Speed-Limited ADS Shuttles
    Reichert, Rudolf ;
    Kan, Cing-Dao
    2024-08-01 | PDF
    This report and the research in it explore important crash safety aspects when shuttles equipped with Automated Driving Systems and of different mass and size are struck by light passenger vehicles (LPVs) at various speeds in crossing the centerline frontal, crossing path side, and rear impact configurations. ADS shuttles with gross vehicle weight ...
  • Consumer Guide to Uniform Tire Quality Grading
    Consumer Guide to Uniform Tire Quality Grading
    United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Vehicle Safety Research
    2024-07-01 | PDF
    Comparative grade designations for treadwear, traction and temperature for all passenger car tires, except deep tread, winter-type snow tires; space-saver or temporary use spares; or tires with normal rim diameters of 12 inches or less.
  • Material Flammability Test Procedure Development Support
    Material Flammability Test Procedure Development Support
    Huczek, Jason P ;
    Janssens, Marc L.
    2024-07-01 | PDF
    This report describes results of a research program that is a follow-up project to previous work documented in NHTSA’s, “Potential Alternative Methodology for Evaluating Flammability of Interior Automotive Materials” to improve the repeatability and reproducibility of evaluating the flammability of interior materials that are difficult to test per ...
  • Development of Side Impact Test Procedures for Improved Wheelchair Transportation Safety
    Development of Side Impact Test Procedures for Improved Wheelchair Transportation Safety
    Klinich, Kathleen D. ;
    Manary, Miriam A.
    2024-06-01 | PDF
    This report presents the development of side impact test procedures for evaluating wheelchairs, wheelchair tiedowns and occupant restraint systems (WTORS), and vehicle-based occupant protection systems for wheelchair seating stations. The background includes review of existing relevant voluntary standards and past research. Tasks to develop the tes ...
  • Restraint Design for Obese Occupants Obese GHBMC Model Modifications Fourth of Four Parts
    Restraint Design for Obese Occupants: Obese GHBMC Model Modifications [Fourth of Four Parts]
    Sun, Zhaonan ;
    Gepner, Bronek
    2024-05-01 | PDF
    Fourth of four parts. The objective of this study was to modify the Global Human Body Models Consortium obesity models to improve their response relative to the obese postmortem human surrogates in a series of tabletop belt tests. This study found that submarining could be modeled by breaking boundary condition or large shear deformation in flesh; ...
  • Restraint Design for Obese Occupants Belt Pull Test Simulations Error Effects Modeling Third of Four Parts
    Restraint Design for Obese Occupants: Belt Pull Test Simulations Error Effects Modeling [Third of Four Parts]
    Sun, Zhaonan ;
    Kerrigan, Jason R.
    2024-05-01 | PDF
    Third of four parts. This task evaluates the Global Human Body Models Consortium (GHBMC) models representing obese people with respect to the obese postmortem human surrogates test series of tabletop belt pull tests previously performed at the University of Virginia’s Center for Applied Biomechanics. Using a finite element model of the test fixture ...
  • Restraint Design for Obese Occupants First of Four Parts
    Restraint Design for Obese Occupants [First of Four Parts]
    Joodaki, Hamed ;
    Gepner, Bronek
    2024-05-01 | PDF
    This study drew conclusions by conducting research in five different parts: the effect of obesity on the risk of injury to different body regions; the most frequent injuries of occupants with and without obesity and the potential injury mechanism of the most frequent injuries of occupants with obesity; quantified comparison of the response of a Glo ...
  • Restraint of Design for Obese Occupants RearSeat Simulations Second of Four Parts
    Restraint of Design for Obese Occupants: Rear-Seat Simulations [Second of Four Parts]
    Kerrigan, Jason R. ;
    Forman, Jason L.
    2024-05-01 | PDF
    This study evaluates the biofidelity of Global Human Body Modeling Consortium models representing obese people by comparing their kinematics with obese postmortem human surrogates in frontal sled tests. It was necessary to develop a finite element model to define accurate boundary conditions. Experimental tests with a robotic arm as well as an Inst ...
  • Review of Technology to Prevent AlcoholandDrug Impaired Crashes Update
    Review of Technology to Prevent Alcohol-and-Drug Impaired Crashes: Update
    Pollard, John K. ;
    Nadler, Eric D
    2024-05-01 | PDF
    This report examines the state of the art and availability of technology to prevent alcohol- and drug-impaired driving by reviewing the progress of automakers, suppliers, and technology developers since 2007, when the Review of Technology to Prevent Alcohol-Impaired Crashes (TOPIC) was published. The present examination increases the scope of the 2 ...
  • Crash Compatibility for Occupantless Delivery Vehicles
    Crash Compatibility for Occupantless Delivery Vehicles
    Kan, Steve ;
    Reichert, Rudolf
    2024-03-01 | PDF
    This research studied how variations in an occupantless delivery vehicle’s (ODV) design can affect the occupants in an occupied crash partner vehicle, across a range of expected operational design domains. In full frontal and frontal oblique impact configurations, improved ODV compatibility correlated well with less severe LPV crash pulses, lower o ...
  • Vehicle Assessment Using Integrated Crash Avoidance and Crashworthiness Pedestrian Safety Test Procedures
    Vehicle Assessment Using Integrated Crash Avoidance and Crashworthiness Pedestrian Safety Test Procedures
    Suntay, Brian ;
    Gerdus, Eric
    2024-01-01 | PDF
    The objective of this study was to test a set of vehicles using both pedestrian automatic emergency braking (PAEB) and crashworthiness (CW) test protocols to evaluate ways in which the results of each test condition can be used to inform and, if necessary, refine, the test conditions and/or performance requirements of the other. PAEB test track res ...
  • Pedestrian Safety Assessment of Crashworthiness Test Procedures
    Pedestrian Safety: Assessment of Crashworthiness Test Procedures
    Hu, Jingwen ;
    Lin, Yang-Shen
    2023-11-01 | PDF
    The objective of this study was to use finite element pedestrian and vehicle models to evaluate pedestrian interactions with vehicles equipped with pop-up hoods. A virtual database of pedestrian impacts was generated with a wide range of vehicle front-end geometries. Prediction models were developed for pedestrian head impact time (HIT), which is i ...
  • Assessment of Headlamp Aim for New Vehicles
    Assessment of Headlamp Aim for New Vehicles
    Voyzey, Nick ;
    Mazzae, Elizabeth N.
    2023-10-01 | PDF
    This report summarizes an evaluation of new vehicle headlamp vertical aim angle state, or how well a new vehicle’s headlamps are aimed at the time of vehicle delivery to the purchaser. Using the inspection method from SAE J599 determined the vertical headlamp aim angle for a set of 15 vehicles. This procedure involves shining the lower beam headlam ...
  • Pilot Study of Driver Use of a CameraBased Visibility System Versus Mirrors
    Pilot Study of Driver Use of a Camera-Based Visibility System Versus Mirrors
    Mazzae, Elizabeth N. ;
    Satterfield, Kelly
    2023-10-01 | PDF
    This report describes research on camera-based visibility systems, also referred to as camera-monitor systems (CMSs), and whether they can be used as safely as existing Federal Motor Vehicle Safety Standard No. 111 compliant outside rearview mirrors. CMSs are designed to be either a supplementary or alternative means to provide drivers with the rea ...
  • Development of Discrete Size Measurement Methodologies for Motorcycle Helmets
    Development of Discrete Size Measurement Methodologies for Motorcycle Helmets
    Wietholter, Kedryn ;
    Rains, Corinn
    2023-09-01 | PDF
    FMVSS No. 218 defines the discrete size of a motorcycle helmet and requires it on the label; however, it does not specify how to measure the size. In addition, there is no standard procedure for determining the helmet positioning index (HPI) used to align the helmet on the headform for measurements and testing. This research developed procedures to ...
  • An Approach for the Selection and Description of Elements Used to Define Driving Scenarios Part II
    An Approach for the Selection and Description of Elements Used to Define Driving Scenarios – Part II
    Rao, Sughosh J. ;
    Salaani, Kamel
    2023-07-01 | PDF
    The primary goal of this research report is to study the elements and properties that may be used to describe driving scenarios. This report builds on previous research in which five scenarios were chosen from human driving data and various proposed behavioral competencies for automated driving systems. A preliminary list of elements and properties ...
21 - 40 / 237