I believe Quebec uses mostly pictorial signage instead of worded signage, Ontario is kind of in between - some of our signs use symbols and some use words.
I believe Ontario would use a similar to what you described for crosswinds...well it would be in km instead of miles though
"beware of Moutains in the Road"
I believe Ontario would use a similar to what you described for crosswinds...well it would be in km instead of miles though