Road hazards are a common problem for drivers, and can include ruts, slicks, esses, poths, and potholes. Ruts are deep grooves in the road that can cause a vehicle to lose control. Slicks are patches of oil or other slippery substances on the road that can cause a vehicle to skid. Esses are sharp turns in the road that can be difficult to navigate. Poths are large holes in the road that can cause a vehicle to jolt and can damage the suspension. Potholes are also large holes in the road, but they are usually caused by water erosion and can cause a vehicle to lose control.