Yes, driving with interior lights on is not explicitly prohibited under Japan’s Road Traffic Act, but it may violate Article 71(3) if deemed to obscure the driver’s view or distract other road users, per National Police Agency (NPA) 2024 guidelines.
Key Regulations for Driving With Interior Lights On in Japan
- Obstruction of Vision (Article 71(3)): Interior lights must not impair the driver’s forward or rearward visibility, as enforced by local traffic police under NPA’s 2026 compliance directives.
- Distraction Risk (Article 70): Excessive interior lighting that diverts attention from the road may be cited as a violation of safe driving obligations, per Metropolitan Police Department (MPD) operational manuals.
- Local Enforcement Discretion: Prefectural police (e.g., Osaka, Tokyo) may issue warnings or fines (¥10,000–¥30,000) if lighting is deemed hazardous, despite no nationwide ban.
Note: While no statute explicitly bans interior lights, courts have upheld penalties under general safety clauses. The NPA’s 2026 amendments emphasize “visual clarity” as a priority, signaling stricter enforcement. Drivers should avoid prolonged use in urban or high-traffic zones to mitigate liability.