Originally Posted by JoeyBike

This is total mythology.

I have bike toured across the USA east to west once and north to south 4 times, been passed by countless large trucks on narrow back roads and Interstate highways so close that I could have put my hand on the trailers without extending my arm and have NEVER experienced anything close to being sucked into the trailer. Actually, as the truck goes by it creates a wake just like a boat that slightly pushes me away, then after passing I might get slightly pulled along behind it which I found quite pleasurable.

Now if there was an extreme crosswind from the left, the truck will BLOCK THE WIND as it goes by. So if I were LEANING into the crosswind as the truck passed, and the wind stopped hitting me, I could, possibly, veer toward the trailer then be caught by the crosswind leaning the wrong way after the truck passed and be blown off the tarmac to the right on a shoulderless road.

Never was there one instance of me feeling sucked under a tractor trailer (18-wheeler) even slightly. Total BS.