Deductions take about 30% of your gross pay. There is no night-out money but long-haul drivers can get a tax rebate at the end of every year which is based on the number of days that they were away from home.
All my runs start with a trip south of the border and then back to Canada. I have been here 12 years now and worked for several different companies; all doing long-haul work, which I prefer. Most of my trips for the last 8 years are documented here http://chrisarbon-roadtrips.blogspot.ca/. You could trawl through that lot to get an idea of what you could be asked to do.
For a single bloke who doesn’t mind hard work, it can be a good way to see North America and earn enough to have a good standard of living. But for a married man with kids; coming to Canada and expecting that long-haul truck-driving is the answer to all there problems is a big mistake.