what the above post means

But I can tell you , the hum bugging many in Christchurch New Zealand , is simply giant vacuum cleaner trucks sweeping the gutters

Sound insulation baffles are blown to hell , and the contractors wont fork out $5500 per truck to fix

They fudged the sound level test they did on their OWN machine ....and just keep on working ...which wouldnt bother me too much , except they are working 24/7 and driving me CRAZY ,the noise traveling 7km,s or more on a still night