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| Document Title | Key points on Exterior Sound Enhancement Systems/Exterior Sound Generator requirements | ||||||||
| Reference Number | R51/R138-11-01 | ||||||||
| Date |
20 Jun 2025
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| Rulemaking Area(s) | UN R51 Vehicle Noise and UN R138 Quiet Road Transport Vehicles | ||||||||
| Meeting(s) | |||||||||
| Related Documents | |||||||||
| R51/R138-10-02 | Key points on exterior sound enhancement testing requirements | ||||||||
| Downloads | |||||||||
| UNECE server | .pdf format | ||||||||
| GAR server | .pdf format | ||||||||