[FourPeas]

The gravel roads I'm familiar with occasionally had a liquid sprayed on them but it certainly wasn't tar. In the five years I lived there, the roads never took on anything resembling a paved look. They were good old dirt with a bit of rock. The rock tended not to stay on the road, but found its way to the edge. A month after new gravel was put on, and neighborhood windshields chipped/cracked the ruts and holes appeared and the road became bumpy and dusty again.

[Kirkwood]

Old oil was sprayed on gravel roads. Consequently your car would get covered with oil and then when you drove down a road that wsn’t oiled, the dust would roll up and stick onto your oily car. Nice! They kind of stopped doing that when it was discoveed that counties were using oil from old electrical equipment that was loaded with PCBs. So we’re bring back dirty, oily, cancering causing cars... thanks 0bama!!!