"Splash and spray impacts" and "aerodynamic buffeting" are two of the traffic-operation problems named in 49 CFR 383.115(d). What do these terms refer to?

49 CFR 383.115(d)

These are easy to misread as problems the truck driver experiences, but the regulation is actually about the driver's responsibility to be aware of how their own rig affects everyone else's visibility and vehicle control nearby — important context for safe lane changes and passing.