PS. What is the ruling on accelerating before a posted speed increase? 106 in an 80 isn't so bad.
According to the Highway Traffic Act, the rule for accelerating is that if you are in a 60 zone entering an 80, you must maintain a speed of 60 or less until you hit the 80 zone, then you can accelerate. Of course no one does it that way, but that's what the law says.
46 over, if you just pay it, is not only 4 demerit points and a big fine, but the insurance companies consider this a serious speeding offence and will blow the roof off your premiums. I'd suggest pleading not guilty and then request disclosure of the Crown's evidence. That at least gets the process started.
Once turned around, a vast majority of police catch up and then check the plate of the subject vehicle, sometimes there is a longer delay if another unit is "on the air". Once information is returned (make, model, validation, owner) we sometimes ask for a check on the owner, which takes a little bit longer. So after all that, there is the location of the stop, safe spot, lighting, driveways etc to consider. End all, many reasons not to stop someone at that moment.
Above is merely a suggestion/thought and in no way constitutes legal advice or views of my employer. www.OHTA.ca