What happened
Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) runs the Japan New Car Assessment Program (JNCAP) with the National Agency for Automotive Safety and Victims' Aid (NASVA). On 21 September 2021, MLIT published the first result of its 2021 assessment, for the Nissan Roox. The Roox is a kei car, Japan's smallest class of passenger car. It scored 82.00 of 82 points for preventive safety, the first kei car with full marks. According to Nissan, the assessment covers braking for vehicles and for pedestrians by day and at night, with and without street lights. It also covers lane departure prevention, rear view information, advanced headlights and acceleration suppression for pedal errors. With 86.54 of 100 for crash safety and an emergency call system, the Roox won the five-star award. Nissan credits the full marks to adaptive LED headlights that make pedestrians more visible at night. Mitsubishi's eK Space reused the Roox's test results and also scored full marks. No crash avoided on public roads is reported.
Sources
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Assessment report, by authors with no tie to the system.
Ministry of Land, Infrastructure, Transport and Tourism (MLIT), with the National Agency for Automotive Safety and Victims' Aid (NASVA). 「日産ルークス」がファイブスター賞を受賞！～自動車安全性能2021結果公表～ Press release, 21 September 2021. In English, the quoted passage says that the Roox became the first kei car to score full marks in the preventive safety assessment.
予防安全性能評価では軽自動車で初の満点を獲得
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Assessment report, by authors with no tie to the system.
Ministry of Land, Infrastructure, Transport and Tourism (MLIT). 自動車安全性能2021評価結果, attachment to the press release of 21 September 2021. The sheet gives the Roox 176.54 of 190 points in total, 86.54 of 100 for crash safety, 82.00 of 82 for preventive safety and 8 of 8 for its emergency call system. The quoted preventive safety result is the same for Mitsubishi's eK Space.
予防安全 A ランク 100% (82.00/82 点)
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Press release, by the makers.
Nissan Motor Co. 「日産ルークス」、自動車アセスメント（JNCAP）「自動車安全性能2021」で軽自動車初の予防安全性能評価満点で最高評価「ファイブスター賞」を獲得. News release, 21 September 2021. In English, the quoted passage says that the Roox is Nissan's first kei car with the Adaptive LED Headlight System, which lights the surroundings with high beam even when other vehicles are ahead and so makes pedestrians more visible at night.
日産の軽で初めて「アダプティブLEDヘッドライトシステム」を装備し、前方に他の車両がいる状況でも周辺をハイビームで照射することにより、夜間の歩行者等の視認性を高めるなど、安全性を向上させています。
Details
AI system
- Workflow
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JNCAP tested a Roox Highway Star X 2WD, including the ProPILOT Edition, with Nissan's original navigation. Adaptive LED headlights kept the high beam on around other vehicles to light pedestrians at night. Nissan lists Intelligent Emergency Braking and pedal-error collision prevention among the systems that help the driver avoid danger.
Follow-up
- Conditions for replication
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The car carries the tested equipment, since JNCAP tested a Highway Star X. The pedestrian or vehicle appears in a tested situation, by day or at night with or without street lights.
Entry details
- Sector
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Road vehicle crash avoidance.
- Purpose
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Nissan built Intelligent Emergency Braking to detect vehicles and pedestrians ahead by day and at night and to brake automatically to avoid or lessen a collision.
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Cite this record
Peter H. Vartanian. (2026). Intelligent Emergency Braking helps the Roox to full marks from JNCAP (AIBD-1103). Artificial Intelligence Benefits Database, edition of 1 November 2026. https://petervartanian.xyz/aibd/records/AIBD-1103.html (archived at https://doi.org/10.7910/DVN/AADSII, version 7.0)