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...
Forum Discussion
4X4Dodger wrote:
Sorry but the effect is the same for cars, trucks and other vehicles.
And the others are correct this is what is happening when a truck passes you.
If you are really attuned to your vehicle you will feel the initial push of the bow wave, then comes the low pressure area or feeling of being pulled in.
Once again, contradictory statements. The last one is mostly true and explains the question originally asked here. If you are being overtaken, that initial bow wave hits you in the BACK and makes you feel that you are being pushed/sucked in the opposite direction.
You really do not feel the low pressure area, hopefully, because it remains within a few inches to maybe a foot of the big vehicle in question. OUTSIDE of that area, the pressure is higher.......UNITL you get to the back where the pressure wave collapses and a vacuum is formed.
And none of that really has anything to do with the Bernolli effect.
