Same problem here but its young kids.
In winter they stop,. but as soon as temps hit high teens they out almost every day, and at the quiet hours, so usually during night time e.g. 2am or very late evening when traffic dies down.
The bikes themselves at normal revs would be ok, but they stop outside my house and keep revving for few mins before moving on. They keep stopping also every 20 seconds or so to keep revving then moving on again, they do this for hours sometimes just going round in circles to annoy the neighborhood.
In winter they stop,. but as soon as temps hit high teens they out almost every day, and at the quiet hours, so usually during night time e.g. 2am or very late evening when traffic dies down.
The bikes themselves at normal revs would be ok, but they stop outside my house and keep revving for few mins before moving on. They keep stopping also every 20 seconds or so to keep revving then moving on again, they do this for hours sometimes just going round in circles to annoy the neighborhood.