What does a sign thats warms of a diabled person crossing look like
It is a sign of anger, frustration, or any other synonym of the two. It could be used as an animal noise.
You're talking about driveways, right? As in your zoning says you can have either a concrete drive, an asphalt one or a sand & gravel one? Gravel is crushed rock, and they say "sand and gravel" because gravel almost always has sand in it. Crushed loose bedrock would be fine.
When driving on gravel you can lose control of your car because the gravel is so loose. The best way to drive on gravel is to go slow.
Scree Gravel
The gravel acts similar to rough ball-bearings, and the car's momentum may carry it forward for a short distance due to loss of friction.
Yes you can pass other vehicles on gravel road unless a sign prohibits it.
They only do that when stupid drivers floor the gas.
Guppy
Loose chippings are loose gravel or stone fragments which have become detached from a road surface and form a hazard to vehicles using that road
The solid rock that underlies loose material, such as soil, sand, clay, or gravel.
Loose and dry 1522 Kg/cu. meter