I can recall lots of dust when the street next door was unpaved. Even though there was virtually no traffic on that street, the dust decreased significantly when it was paved.

It may be more common to have "less improved" roads in coastal areas. Gravel, or "oyster shell" improvements are fairly common, especially in smaller towns, on the US west coast (at least north of California) and even light traffic kicks up significant dust that's briefly airborn but settles out pretty quickly. There is perhaps a tendency to cheaper road improvement where coastal weather makes repair/replacement more frequent(?).

On our east coast the population density dictates more prevalent concrete/asphalt paving anywhere there's any traffic at all, so the difference in dusting is less noticed, so far as I've observed.

Even where solid surface paving is used, shoulder widths can affect how much dust gets sucked up in the vehicle wakes, and this could affect how much settles on the furniture. (On a really primitive road, people may drive a little slower, so a small improvement like just laying down gravel may even produce more dust due to higher speeds.)

A couple of decades ago, several of the most-used roads between Wichita and Hutchinson KS (about 60 miles) saw a significant reduction in use due to a new "freeway" with good hard surfaces and fairly wide "breakdown lanes" along most of it, and the villagers commented about the reduction in dust that they attributed to moving nearly all the traffic to the better road.

Comment from someone where the dust levels seem higher would be needed to decide whether this is, or might be, one of the causes in a particular area.

John