In Latvian traffic rules (CSN), what is the maximum permissible noise level for passenger car exhaust systems?
Answer and explanation
Correct answer: D. Exhaust noise must not exceed the manufacturer type-approval limit (generally around 80 dB(A))
- Step 1: Under Latvian Road Traffic Regulations (CSN), Exhaust noise levels must comply with certified manufacturer type-approval limits tested at technical inspection. Answer: Exhaust noise must not exceed the manufacturer type-approval limit (generally around 80 dB(A)). Why not the others: Up to 110 dB(A) for modified sports passenger vehicles does not represent the statutory standard under Latvian vehicle safety rules.
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