Friction can be calculated by multiplying the coefficient of friction (a measure of the roughness between two surfaces) by the normal force (the force exerted by an object on a surface). The resulting value is the amount of friction between the two surfaces.
The main factors that affect friction on icy roads are the temperature, the type and condition of the road surface, and the type of vehicle tires. Lower temperatures reduce the effectiveness of salt and other de-icing agents, while rougher and more worn road surfaces provide less traction. Additionally, vehicles with bald or worn tires will have less grip on the road.
One way to increase friction on your vehicle's tires is to make sure they are properly inflated. Underinflated tires have less surface area in contact with the road, reducing friction. Using snow or winter tires can also increase traction on icy roads. Additionally, driving at slower speeds and avoiding sudden movements can help maintain control and increase friction.
While ABS can help prevent your vehicle's wheels from locking up and skidding, it does not increase friction or improve traction on icy roads. It is still important to drive cautiously and maintain a safe distance from other vehicles to avoid accidents.
Before parking on an icy road, it is important to assess the road conditions and the angle and slope of the parking spot. If the road is very icy and the spot is on a steep slope, it may not be safe to park there. Additionally, make sure your vehicle's tires are equipped for winter driving and avoid parking on hills or inclines if possible.