People always say drafting isn't safe, but I disagree strongly. I just make sure I've seen the truck's brakelights work prior to engaging it. The slower we're going, the closer I get. I just stare hard at one of his brakelights and the instant it comes on, I react. I've been a video game player for years and reflexes is one thing I have going for me. Also consider how much longer it would take for such a massive truck to come to a stop (much more than either of my cars)

I'd much rather be behind an 18 wheeler than in front or next to it.