Yes you can pass other vehicles on gravel road unless a sign prohibits it.
a gravel road.
Car Wheels on a Gravel Road was created on 1998-06-30.
road
And can police pull you over for driving on a gravel road, with a dirt bike?
It is paved for the first 30km, and gravel the rest of the way to Mountain Aire Lodge, the Forestry Trunk Road or Ya-Ha Tinda. The gravel road is quite wide as there is lots of oilfield trucks that use it routinely.
with a washboard
Tar or gravel
who invented the washboard?
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.
When a road is constructed, 12 inch layers of gravel are laid and compacted until the road bed reaches the desired height. There are no braces other than a bed of compacted gravel.
gravel