Division 2.1 Limiting valuesF1
The sound level measured in accordance with the provisions of Annex III shall not exceed the following limits:
| Vehicle categories | Values expressed in dB(A) (decibels(A)) |
|---|---|
| 2.1.1. Vehicles intended for the carriage of passengers, and comprising not more than nine seats including the driver's seat | 74 |
| 2.1.2. Vehicles intended for the carriage of passengers and equipped with more than nine seats, including the driver's seat; and having a maximum permissible mass of more than 3,5 tonnes and: | |
| 2.1.2.1. with an engine power of less than 150 kW | 78 |
| 2.1.2.2. with an engine power of not less than 150 kW | 80 |
| 2.1.3. Vehicles intended for the carriage of passengers and equipped with more than nine seats, including the driver's seat; vehicles intended for the carriage of goods: | |
| 2.1.3.1. with a maximum permissible mass not exceeding 2 tonnes | 76 |
| 2.1.3.2. with a maximum permissible mass exceeding 2 tonnes but not exceeding 3,5 tonnes | 77 |
| 2.1.4. Vehicles intended for the carriage of goods and having a maximum permissible mass exceeding 3,5 tonnes: | |
| 2.1.4.1. with an engine power of less than 75 kW | 77 |
| 2.1.4.2. with an engine power of not less than 75 kW but less than 150 kW | 78 |
| 2.1.4.3. with an engine power of not less than 150 kW | 80 |
However
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for vehicles of categories 2.1.1 and 2.1.3, the limit values are increased by 1 dB(A) if they are equipped with a direct injection diesel engine,
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for vehicles with a maximum permissible mass of over two tonnes designed for off-road use, the limit values are increased by 1 dB(A) if their engine power is less than 150 kW and 2 dB(A) if their engine power is 150 kW or more,
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for vehicles in category 2.1.1, equipped with a manually operated gear box having more than four forward gears and with an engine developing a maximum power exceeding 140 kW/t and whose maximum power/maximum mass ratio exceeds 75 kW/t, the limit values are increased by 1 dB(A) if the speed at which the rear of the vehicle passes the line BB' in third gear is greater than 61 km/h.