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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.","category":"aggregate result","unexpected":false,"purpose":"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.","system":"Autosteer (Tesla Autopilot)","model_version":null,"developer":"Tesla Motors, Inc. (camera vision system on Mobileye's EyeQ3 chip)","deployer":"Tesla Motors, Inc. 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In 2018 it said that it had not assessed Autosteer's effectiveness.","account":"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."}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["summary","account"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"systems[].autonomy_permissions":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].component_role":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].deployment_configuration":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].inputs_outputs":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].model_name":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].model_version":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].product_name":{"state":"value_present","value":{"kind":"record_fields","fields":{"system":"Autosteer (Tesla Autopilot)"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["system"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"systems[].provider":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"taxonomy_crosswalks[]":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"title":{"state":"value_present","value":{"kind":"record_fields","fields":{"title":"NHTSA's defect investigation found that crash rates of 2014-2016 Teslas dropped by almost 40 percent after Autosteer was installed","headline":"NHTSA saw Tesla crash rates fall after *Autosteer* was installed"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["title","headline"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"version":{"state":"value_present","value":{"kind":"identifiers","identifiers":["8140420785973ae85b23ca74e91c6f4a067624e2b23393fbdb7b5a40ba208238"],"role":"SHA-256 of the complete public record and its assessments"},"provenance":{"kind":"curatorial","basis":"SHA-256 of the public record, its assessments, and its displayed answers and notes, excluding its own identifier and the derived coverage summary.","record_fields":[],"source_refs":[]},"review_state":"record_mapped","coverage":"complete"},"workflow":{"state":"value_present","value":{"kind":"record_fields","fields":{"account":"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.","replication":{"produced_by":["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."],"must_hold":["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."],"echoes":[]}}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["account","replication"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"}},"summary":{"total":91,"addressed":91,"known":28,"reviewed":2,"reviewed_complete":2,"reviewed_partial":0,"record_mapped":26,"review_not_assessed":63,"not_assessed":0,"complete":false,"by_state":{"value_present":28,"not_reported":0,"unresolved":63,"not_assessed":0,"not_applicable":0,"withheld":0,"source_unavailable":0}}},"presentation_version":"a0d08f7920b01fa9474cf1a254b83bdc2924327a8f5c58863f0ca37a6eaeb0e6"}