I never worry about the results of randoms, but it's annoying when you get back to the yard after a 10 or 12 hour day, and they tell you you have to drive to the doctor and pee in a cup. If you already went to the bathroom before they told you, then you might have to sit in the waiting room for a long time, until you can fill the cup enough. If you didn't go already, then you're probably sitting in the waiting room dancing in your chair for half an hour, before they finally call your name.
Our company also has a policy that, if you get in an accident, even if it's not even remotely your fault, and someone has to go to the hospital or a vehicle has to be towed, you have to get tested.
I honestly can't wait to retire. Not only does it seem like everything's stacked against truck drivers, but every day I drive just adds to my misanthropic nature