CEN/TC 226
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 72921 | EN 14389:2023 | Road traffic noise reducing devices - Procedures for assessing long term performance | Izstrādē |
| 72921 | LVS EN 14389:2023 | Road traffic noise reducing devices - Procedures for assessing long term performance | Standarts spēkā |
| 72920 | EN 1793-6:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 6: Intrinsic characteristics - Airborne sound insulation under direct sound field conditions | Standarts spēkā |
| 72920 | LVS EN 1793-6:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 6: Intrinsic characteristics - Airborne sound insulation under direct sound field conditions | Standarts spēkā |
| 72918 | EN 1793-1:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics - Sound absorption under diffuse sound field conditions | Standarts spēkā |
| 72918 | LVS EN 1793-1:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics - Sound absorption under diffuse sound field conditions | Standarts spēkā |
| 72917 | EN 1793-3:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 3: Normalized traffic noise spectrum | Standarts spēkā |
| 72917 | LVS EN 1793-3:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 3: Normalized traffic noise spectrum | Standarts spēkā |
| 72916 | LVS EN 1793-4:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - Intrinsic sound diffraction | Standarts spēkā |
| 72916 | EN 1793-4:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - Intrinsic sound diffraction | Standarts spēkā |
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