Although well-constructed and graded gravel roads are suitable for speeds of 100 km/h (60 mph), driving on them requires far more attention to variations of the surface and it is easier to lose control than on a paved road. In addition to potholes, ruts and loose stony or sandy ridges at the edges or in the middle of the road, problems associated with driving on gravel roads include:
* sharper and larger stones cutting and puncturing tires, or being thrown up by the wheels and damaging the underside, especially puncturing the fuel tank of unmodified cars
* stones skipping up hitting the car body, lights or windshields when two vehicles pass
* dust thrown up from a passing vehicle reducing visibility
* 'washboard' corrugations cause loss of control or damage to vehicles
* skidding on mud after rain
* in higher rainfall areas, the increased camber required to drain water, and open drainage ditches at the sides of the road, often cause vehicles with a high centre of gravity, such as trucks and off-road vehicles, to overturn if they do not keep close to the crown of the road.
65 mths ago