What happened
The Office of Defects Investigation of the National Highway Traffic Safety Administration opened a preliminary evaluation of Tesla's Autopilot after a fatal crash in Florida in May 2016. Autosteer, part of Autopilot, uses the forward camera, radar and ultrasonic sensors to keep the car centered in its lane. Investigators used Tesla's mileage and airbag deployment data for 2014-2016 Model S and 2016 Model X cars with the Autopilot package. They compared crash rates per mile before and after Autosteer was installed, at sale or by over-the-air update. They found that the crash rate dropped by almost 40 percent. NHTSA closed the evaluation on 19 January 2017. The rates covered all miles, including miles without Autopilot in use, and about one-third of the cars had mileage from before installation. On 2 May 2018, NHTSA said that this cursory comparison did not evaluate whether Autosteer was engaged and did not assess its effectiveness.
Sources
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Regulatory document, by authors with no tie to the system.
National Highway Traffic Safety Administration, Office of Defects Investigation. ODI Resume, Preliminary Evaluation PE 16-007: Automatic vehicle control systems (MY2014-2016 Tesla Model S and Model X). Closed 2017-01-19.
Figure 11 shows the rates calculated by ODI for airbag deployment crashes in the subject Tesla vehicles before and after Autosteer installation. The data show that the Tesla vehicles crash rate dropped by almost 40 percent after Autosteer installation.
Details
AI system
- Workflow
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Tesla supplied mileage and airbag deployment data for all MY 2014-2016 Model S and 2016 Model X vehicles with the Autopilot Technology Package. Autopilot was installed at sale or added later through an over-the-air update.
Follow-up
- Conditions for replication
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The driver keeps full attention on the traffic environment and is ready to act. Autosteer is used on highways with a center divider and clear lane markings.
Entry details
- Sector
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Road vehicle crash avoidance.
- Purpose
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Tesla built Autosteer, part of its Autopilot driver assistance system, to provide automated lane-centering steering while the driver keeps full attention on the road.
Not yet checked: model, release, provider, role, configuration, inputs and outputs, autonomy, human oversight, AI contribution, beneficiaries, reach, distribution and access, duration, every measurement question, every money question, ownership and control, dependencies, cross-border connections, geopolitical implications, replication attempts, availability, institutional decision, grounds, action and result, success criterion, every evidence question, observed or intended, alternative assessments, related entries, other identifiers, category mappings.
Cite this record
Peter H. Vartanian. (2026). NHTSA saw Tesla crash rates fall after Autosteer was installed (AIBD-0815). Artificial Intelligence Benefits Database, edition of 31 October 2026. https://petervartanian.xyz/aibd/records/AIBD-0815.html (archived at https://doi.org/10.7910/DVN/AADSII, version 4.0)