I need to commute 35 miles to work on various roadways in a suburban environment. One of the things that I've noticed, is that on the way to work in the morning, every time I'm behind an obvious tradie vehicle (pickup truck or van with equipment / ladders on the top/back), it's guaranteed that they will be going extremely slow. I'm not talking about going the speed limit when I want to go faster, I'm talking about these vehicles traveling considerably UNDER the speed limit. My takeaway from this is that the last thing in the world these tradies want to do is get to work. Like they're savoring that last little bit in the car before they have to enter their personal hell.

Don't even get me started about the landscaping vehicles, although those are going super a$$ slow for another obvious reason.....

Pay attention to the race of the driver. If they are going slow they are probably latino and they are probably illegal.
White tradies probably did some Meth before work so they are going to be zooming along at 90+

It's even worse during the day since they get paid by the hour...

The people I know drive slow usually do so because they are in one way or another driving dirty. Like the dude above said, illegal, drugs, weapons, etc.

Kinda true to an extent.

Also, due to travel and traffic, you always leave early to make sure you're on time. If there's no traffic or accidents you just take it easy and bs with your bros on the way to work.