Fault ratios in Japanese traffic accidents are determined based on Civil Code Art. 722(2) (contributory negligence). The Hanrei Times No. 38 provides standard ratios used in practice. Examples: signal violation vs. green light = 100:0, right turn vs. straight = 80:20, rear-end = 100:0, pedestrian on crosswalk vs. car = 0:100. Modification factors include speeding (+10-20%), drunk driving (+15-20%), distracted driving (+10-15%). Disputes can be resolved through dashcam evidence, police accident reports, or ADR through the JFBA Traffic Accident Consultation Center.
Traffic Accidents- View allLast updated: 2026-03-13
Fault Ratios in Japanese Traffic Accidents: Standard Ratios and Modifiers
Key Takeaways
- ✓Base fault ratios are established for each accident type
- ✓Modification factors like speeding or drinking adjust the ratio
- ✓Insurance company offers can be negotiated if unsatisfactory
- ✓The Precedent Times standards are widely referenced in practice
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This article provides general legal information and does not constitute legal advice. For specific legal issues, please consult with a qualified attorney.
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