Update:
Thx for responses ...
Looking at google maps, the location of the speeding offense was just past/at the ValleyWood exit on hwy 410 north. Very shortly after that, 1km maybe, you're on hwy 10.
On that day, for some reason, I thought I was before the first Valleywood exit sign where the speed limit is higher. I was waiting to see the Valleywood exit sign.
Often travel that way, typically I exit at Valleywood, or sometimes continue onto hwy 10. Usually if passing Valleywood, my driving speed much slower, because I know hwy 10 is around the turn. And I'm usually move into the slower inside line when I see the first Valleywood exit sign. I was pretty sure the speed limit was 100 all the way up 410, but because I typically exit at ValleyWood and know hwy 10 is just around the turn from there, my vehicle speed was likely within acceptable range to avoid tickets normally anyway.
I still think the speed limit changes should be more visible, as someone unfamiliar with the area would not be aware hwy 10 is just around the turn, with a different speed limit. But that excuse wouldn't apply to me ...mostly I just missed the exit I was expecting, thought I was in a different section of 410.
Simply thought I was in a different section of 410 north. Probably thinking about something, I guess.
Not sure what defense, there could be for a stunt driving charge under that scenario. I think that law is too harsh, too costly, not applied well; as it currently is. From what I read in the last couple of days, it's mostly affecting the wrong target group for the intent of the law.
The speed limit signage on 410 north seems insufficient, based on myself never noticing it in the last three years of using the road. On 410, other vehicle speeds on the 100kph section, varies from 80 -140+(sometimes), over multiple lanes, with quite a few on/off ramps ... drivers attention is focused on traffic, not small signage off to the far right ... the signs should be over head to be noticed. There are also peripheral vision issues ... if the signage is across 2 or more lanes ... that's not always true, but more true at higher speeds (100) and increased traffic volume.
Anyways, this is not the forum for that stuff ... very little individuals can do except bend over in this case.
From what I understand parts of the law have been deemed unconstitutional or similar ... but is under appeal, so it still continues. Given the harshness of the law, continuing under an appeals periods is not what the government should be doing. I also think removing reasonable discretion from police officers, at the limit set, is questionable as well. YET, police are given other discretion, in terms of tires spinning, turning too fast etc. .. oh come on.
Given the way the law is stated, and being applied in practice, it is far too easy to unintentionally get snagged by this. Pretty soon, if not already, we are going to start seeing individuals being snagged multiple times.