Toyota Unintended Acceleration Investigation |
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Return to Toyota Page Sections NHTSA-NASA Study of Unintended Acceleration in Toyota Vehicles Multimedia Documents Article Index |
NHTSA-NASA Study of Unintended Acceleration in Toyota Vehicles
This section from NHTSA.gov
The Department of Transportation released results from an unprecedented ten-month study of potential electronics-based causes for unintended acceleration in Toyota vehicles. NHTSA launched the study last spring at the request of Congress, and enlisted National Aeronautics and Space Administration (NASA) engineers with expertise in areas such as computer-controlled electronic systems, electromagnetic interference, and software integrity to conduct new research into whether electronics systems or electromagnetic interference played a role in alleged incidents of unintended acceleration. (Read the press release)
Note: Since public release of the NHTSA and NASA reports on February 8, 2011, the agency has revised its redactions to the reports to release certain material previously deemed confidential under 49 U.S.C. § 30167. The NHTSA and NASA reports currently on this web page, which were posted April 15, 2011, replace the ones posted previously and contain the revised redactions.
NHTSA Report on Toyota Unintended Acceleration Investigation
In March 2010, NHTSA enlisted the support of NASA in analyzing the Toyota electronic throttle control (ETC) system to determine whether it contained any vulnerabilities that might realistically be expected to produce unintended acceleration (UA) in a consumer’s use of those vehicles. NASA did not find an electronic cause of large throttle openings that can result in UA incidents. NHTSA did not find a vehicle-based cause of those incidents in addition to those causes already addressed by Toyota recalls.
This report presents NHTSA's studies and findings concerning UA in vehicles manufactured by Toyota. It should be read in conjunction with the report issued by NASA concerning the ETC system in Toyota vehicles.
NHTSA Executive Summary
NHTSA Full Report
NASA Report on Toyota Unintended Acceleration Investigation
NHTSA requested the NASA Engineering and Safety Center (NESC) to study unintended acceleration involving Toyota vehicles. The goal of the study was to determine if there are design and implementation vulnerabilities in the Toyota Electronic Throttle Control System Intelligent (ETCS-i) that could cause UAs and whether those vulnerabilities, if substantiated, could realistically occur in consumers' use of these vehicles.
NASA Executive Summary
NASA Full Report
Appendix A: Software
Appendix B: Fishbone Design
Appendix C: Hardware
Appendix D: Test Scenarios
Additional NHTSA Study Supporting Documentation
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EVENT DATA RECORDER (EDR)
EDR Pre-Crash Validation (VRTC DCD9157-1WDC) Reading Toyota EDR (NHTSA-NVS-2011-ETC-SR05) Report of Fatal Crash (NHTSA-NVS-2011-ETC-SR09) Field Inspection Results Table (NHTSA-NVS-2011-ETC-SR11) Acronyms and Terms Vehicle Characterization (VRTC-DCD9157-WDC) Search Keywords (NHTSA-NVS-2011-ETC-SR01) Peer Review (NHTSA-NVS-2011-ETC-SR14) Analysis of EMC Components (NHTSA-NVS-2011-ETC-SR15) |
| Date | Media or Collection Name & Details | Files |
|---|---|---|
| 27 January 2010 | Toyota Halts US Sales of Popular Models Mil Arcega, VOA News |  Article Page - 5.9MB - 2:35 |
| 4 February 2010 | A Rough Road for Toyota VOA News |  Article Page - 944KB - 4:01 |
| 7 February 2010 | Toyota Apologizes for Massive Auto Recall VOA News | Article Page - 5.0MB - 2:09 |
| 14 February 2010 | Toyota Faces Tough Job Rebuilding Reputation VOA News | Article Page - 876KB - 3:44 |
| 22 February 2010 | US Lawmakers Chastise Toyota Over Recalls Mil Arcega, VOA News | Article Page - 5.1MB - 2:13 |
| 22 February 2010 | US Lawmakers Chastise Toyota Over Recalls Robert Raffaele, VOA News | Article Page - 6.2MB - 2:44 |
| 23 February 2010 | Interview with Jess Toprak of TrueCar.com Dave DeForest, VOA News | Article Page - 2.1MB - 4:44 |
| 23 February 2010 | Toyota CEO Apologizes for Safety Lapses Mil Arcega, VOA News | Article Page - 6.0MB - 2:40 |
| 25 February 2010 | 'I Am Deeply Sorry,' Toyota Chief Tells US Congress VOA News | Article Page - 1.8MB - 3:56 |
| 3 March 2010 | Unintended Acceleration Problems Persist Despite Toyota Recall Repairs Mil Arcega, VOA News | Article Page - 4.6MB - 1:57 |
| 8 March 2010 | Decline in Toyota Sales Gives Rivals Boost Mil Arcega, VOA News | Article Page - 5.9MB - 2:35 |
| 25 March 2010 | Massive Legal Battle Shaping Up Against Toyota Mil Arcega, VOA News | Article Page - 5.0MB - 2:07 |
| 13 May 2010 | Toyota Seeks Consumer Trust To Maintain Profits Dave DeForest, VOA News | Article Page - 2.2MB - 4:52 |
| 7 February 2011 | Investigators Find No Electronic Flaw In Toyotas Mil Arcega, VOA News | Article Page - 6.3MB - 2:44 |
| Date | Document Name & Details | Documents |
|---|---|---|
| March 2007 | Unintended Acceleration/Hybrid ODI Vehicle Investigation / Vehicle to Object 2005 Toyota Prius National Highway Traffic Safety Administration |  PDF - 5,307KB - 16 pages |
| July 2007 | ODI Unintended Acceleration Investigation / Vehicle to Vehicle 2007 Toyota Camry National Highway Traffic Safety Administration | PDF - 7,273KB - 26 pages |
| Fall 2007 | Report of Fatal Crash 2007 Toyota Tundra National Highway Traffic Safety Administration | PDF - 80KB - 8 pages |
| October 2007 | Remote Potential Unintended Acceleration Investigation 2007 Toyota Tundra National Highway Traffic Safety Administration | PDF - 1,515KB - 14 pages |
| January 2008 | On-Site Office of Defects Investigation Potential Unintended Acceleration Investigation Vehicle - 2007 Toyota Avalon National Highway Traffic Safety Administration | PDF - 1,464KB - 16 pages |
| June 2008 | On-Site Office of Defects Investigation Potential Unintended Acceleration Investigation Vehicle - 2007 Lexus ES-350 National Highway Traffic Safety Administration | PDF - 3,235KB - 17 pages |
| October 2009 | Office of Defects Investigation Calspan On-Site Potential Unintended Acceleration Crash Investigation Vehicle: 2002 Toyota Highlander National Highway Traffic Safety Administration | PDF - 901KB - 29 pages |
| November 2009 | Office of Defects Investigation Calspan On-Site Potential Unintended Acceleration Crash Investigation Vehicle: 2010 Toyota Camry National Highway Traffic Safety Administration | PDF - 862KB - 19 pages |
| January 2010 | On-Site Office of Defects Investigation Potential Unintended Acceleration Investigation Vehicle - 2006 Lexus RX-330 National Highway Traffic Safety Administration | PDF - 4,032KB - 18 pages |
| January 2010 | Calspan On-Site Potential Unintended Acceleration Crash Investigation Vehicle: 2007 Toyota Camry National Highway Traffic Safety Administration | PDF - 578KB - 15 pages |
| January 2010 | On-Site Office of Defects Investigation Potential Unintended Acceleration Investigation Vehicle - 2008 Toyota Tacoma PreRunner National Highway Traffic Safety Administration | PDF - 1,972KB - 18 pages |
| February 2010 | Calspan On-Site Potential Unintended Acceleration Crash Investigation Vehicle: 2007 Toyota RAV4 National Highway Traffic Safety Administration | PDF - 427KB - 17 pages |
| February 2010 | Office of Defects Investigation (ODI) On-Site Potential Unintended Acceleration Investigation 2006 Toyota Highlander National Highway Traffic Safety Administration | PDF - 1,197KB - 16 pages |
| February 2010 | Office of Defects Investigation Calspan On-Site Potential Unintended Acceleration Crash Investigation Vehicle: 2008 Toyota Avalon National Highway Traffic Safety Administration | PDF - 734KB - 20 pages |
| 16 February 2010 | Kathleen C. DeMeter, Director, NHTSA Office of Defects Investigation Chris Tinto, Vice President, Toyota Motor North America, Inc. Safety Recalls 07E-082, 09V-388 and 10V-023/TQ10-001 | PDF - 690KB - 15 pages |
| 24 February 2010 | Toyota Gas Pedals: Is the Public at Risk? Hearing before the Committee on Oversight and Government Reform - United States House of Representatives | PDF - 39,641KB - 768 pages |
| March 2010 | Calspan On-Site Potential Unintended Acceleration Crash Investigation Vehicle: 2008 Toyota Avalon National Highway Traffic Safety Administration | PDF - 584KB - 17 pages |
| March 2010 | Office of Defects Investigation Calspan On-Site Potential Unintended Acceleration Crash Investigation Vehicle: 2007 Toyota Camry National Highway Traffic Safety Administration | PDF - 763KB - 26 pages |
| March 2010 | Office of Defects Investigation Calspan On-Site Potential Unintended Acceleration Crash Investigation Vehicle: 2010 Toyota RAV4 National Highway Traffic Safety Administration | PDF - 459KB - 15 pages |
| March 2010 | On-Site Office of Defects Investigation Potential Unintended Acceleration Investigation Vehicle - 2007 Lexus ES-350 National Highway Traffic Safety Administration | PDF - 7,424KB - 23 pages |
| March 2010 | On-Site Office of Defects Investigation Potential Unintended Acceleration Investigation Vehicle - 2009 Toyota Camry National Highway Traffic Safety Administration | PDF - 6,518KB - 18 pages |
| March 2010 | On-Site Office of Defects Investigation Potential Unintended Acceleration Investigation Vehicle - 2009 Toyota Matrix S National Highway Traffic Safety Administration | PDF - 2,265KB - 18 pages |
| 2 March 2010 | Toyota's Recalls and the Government's Response Hearing before the Committee on Commerce, Science, and Transportation - United States Senate | PDF - 2,020KB - 190 pages |
| 18 March 2010 | Chris Tinto, Group Vice President - Technical and Regulatory Affairs, Toyota Motor North America, Inc. Kathleen C. DeMeter, Director, NHTSA Office of Defects Investigation Safety Recalls 07E-082, 09V-388 and 10V-023/TQ10-001 | PDF - 2.1MB - 27 pages |
| March-August 2010 | NHTSA Toyota Pre-Crash EDR Field Inspections National Highway Traffic Safety Administration | PDF - 219KB - 29 pages |
| April 2010 | Calspan Remote Potential Unintended Acceleration Crash Investigation Vehicle: 2009 Toyota Corolla National Highway Traffic Safety Administration | PDF - 414KB - 19 pages |
| November 2010 | On-Site Potential Unintended Acceleration Investigation 2008 Toyota Camry National Highway Traffic Safety Administration | PDF - 4,031KB - 23 pages |
| January 2011 | Tabular Summary of NHTSA Toyota Pre-Crash EDR Field Inspections National Highway Traffic Safety Administration | PDF - 61KB - 7 pages |
| January 2011 | Toyota EDR Data from NHTSA Pre-Crash Field Inspections National Highway Traffic Safety Administration | PDF - 2,913KB - 428 pages |
| January 2011 | Vehicle Characterization and Performance Study of Toyota Camrys National Highway Traffic Safety Administration | PDF - 11.3MB - 257 pages |
| 18 January 2011 | Technical Support to the National Highway Traffic Safety Administration (NHTSA) on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation National Aeronautics and Space Administration | Executive Summary: PDF - 103KB - 6 pages Full Report: PDF - 11.2MB - 177 pages Appendix A: Software: PDF - 7,647KB - 134 pages Appendix B: Fishbone Diagrams: PDF - 1,960KB - 47 pages Appendix C: Hardware: PDF - 9,560KB - 87 pages Appendix D: Summary of Test Scenarios: PDF - 143KB - 7 pages |
| February 2011 | Analysis of Electronic Control Unit and Accelerator Pedal Mechanism Components Damaged During EMC Testing National Highway Traffic Safety Administration | PDF - 3,087KB - 37 pages |
| February 2011 | Background information regarding Toyota EDRs National Highway Traffic Safety Administration | PDF - 28KB - 5 pages |
| February 2011 | Event Data Recorder - Pre Crash Data Validation of Toyota Products National Highway Traffic Safety Administration | PDF - 416KB - 32 pages |
| February 2011 | Keyword Search Terms for Unintended Acceleration Cases in NHTSA Complaint Database National Highway Traffic Safety Administration | PDF - 26KB - 6 pages |
| February 2011 | Peer Review of NHTSA and NASA Test Plan into Toyota Unintended Acceleration National Highway Traffic Safety Administration | PDF - 45KB - 10 pages |
| February 2011 | Reading Toyota EDR Outputs of Pre-Crash Data National Highway Traffic Safety Administration | PDF - 59KB - 5 pages |
| February 2011 | Technical Assessment of Toyota Electronic Throttle Control (ETC) Systems National Highway Traffic Safety Administration | Executive Summary: PDF - 41KB - 6 pages Full Report: PDF - 1,160KB - 77 pages |
| February 2011 | Toyota EDR Software Versions Used in NHTSA Unintended Acceleration Field Investigation Cases National Highway Traffic Safety Administration | PDF - 38KB - 10 pages |
| 6 June 2011 | United States District Court, Northern District of New York Lawrence Cross v. Toyota Motor Corporation, Toyota Motor Sales U.S.A., Inc., State Farm Insurance Company, and John Doe Decision & Order | PDF - 237KB - 6 pages |
| 17 October 2011 | United States District Court, Northern District of New York Lawrence Cross v. State Farm Insurance Company Decision & Order | PDF - 273KB - 14 pages |
