Yeup. I have Hazmat. Quite a hassle. Do I get paid more? Nope.
Same here. It doesn’t pay anything extra at all - but you do get all of the added hassles. I’m one of the luckier ones: I haul propane and am home most nights (after a 15-16 hour day). While I don’t have to wait to be unloaded, I do end up waiting (at the refinery) to get loaded.
It certainly isn’t the glamorous - see the scenery - type of job the recruiters speak of; you’re too busy watching for idiots to really notice the scenery.