Over several years the old 18-wheeler semi trailer trucks have become 30 or more wheels. The once-noisy tractors are now whisper quiet due to federal noise abatement laws and better designed muffler systems that came about by on site noise testing on roadsides by authorities.
What logical reason can be given to allow any other vehicle to ignore the standard of safe noise level set for large transport trucks that were made quieter for the safety of you and I and all people who share the roadways in North America?
R.E. Johnson, Nelson