Why do passing trucks suck instead of blow?
Nope, it's not the first line of a joke or a rhetorical question. I would expect a passing truck or bus to be pushing a wave of high pressure air in front and beside, but I've noticed time and agai...
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RCMAN46 wrote:
Same for a train. There have been people pulled from a platform into the passing train.
The blowing across a piece of paper as described in a previous post is the best example I have seen.
I have found motor homes do the most sucking. I suspect it is due to the very low ground clearance they have compared to most semi's.
Watch a Nascar race. They talk about the side draft at the higher speed tracks.
When it is the worst is with a cross wind coming from the side that a truck or motor home passes. First you have a 20-30 mile wind pushing from the left then all of a sudden there is a suction pushing towards the truck then when it clears a bunch of turbulence and a 20-30 mile wind pushing again.
I believe this is correct.
