Final answer:
Using light brake pressure on icy roads prevents wheels from locking up, avoids vehicle skidding, and helps maintain control. More friction is also desirable in activities like rock climbing. Light rain can make roads slippery by mixing with oil, while heavy rain may wash away such residues, improving traction.
Step-by-step explanation:
Using light brake pressure on an icy road is crucial for maintaining control of your vehicle under slippery conditions. The correct answer is d. All of the above. Applying light pressure on the brakes can prevent the wheels from locking up, which is vital on ice where grip is limited. This in turn helps prevent the vehicle from skidding, maintaining a level of control while on the road. By doing so, you can keep control of the vehicle and navigate more safely under challenging icy conditions.
Examples where more friction is desirable:
Apart from winter tires on icy roads, more friction is also desirable in sports like rock climbing, where climbing shoes are designed to maximize grip on vertical surfaces.
Effects of rain on road control:
When light rain mixes with oil and gasoline on the road, it creates very slippery conditions that can reduce tire traction and vehicle control. A heavy rain, however, can wash away the oil and gas residue, potentially improving traction compared to the slimy conditions caused by a light drizzle.