Seeking your advice - here's the deal: I cycle frequently (every day) around my suburban neighbourhood in a fairly large city in Canada. Since the neighbourhood is set up in that a main road is essentially a loop around, I do laps of it each day, riding on the road. There also a school nearby which means there are sometimes parked cars on the side of the road, which has gotten me in the habit of riding around 1m away from anything near or parked on the curb. Lately however with spring and snow melting, there is an excess of gravel on the sides of the road which has prompted me to ride a slight bit further out (the roads are completely dry however). However it seems with spring and clear roads, drivers are driving more reckless than usual...
Though probably more than 90% of vehicles that pass me on the road (I ride a mountain bike and go around 25-30km/h) pass me safely in that they give enough room, it always seems the every few weeks I get the odd driver who thinks it's a good idea to follow me closely and honk me for a couple metres before passing too close (less than 1m) and stepping on the gas whilst doing so. It appears to be mostly younger drivers that do this, and I have taken plate#s down. Most seem to speed down to the entrance to the main road, which they sometimes get caught up at a light.
Any advice on how to react to this, other than to shake my head and move on, with a sense of thankfulness that I haven't been hit yet? Is it a waste of time to call in the plate #s to the police over something like this?