>Then you are hearing the roar of lawnmowers all weekend. Further out in the country, it's ATVs. The city can actually be quieter.
>
In reality some guys try to use empty bulevards for motor race. Big motorbices amke the same noise like ATV and are in sameway dangerous.
It is hard for police to stop them.

In Sofia(capital city) they reach to agreement this to be done only on the old airplane runway, but here we have only 3 airports and all they are used