Final answer:
When approaching an icy bridge, one should slow down and not apply brakes suddenly to maintain maximum static friction for better vehicle control. Icy bridges can be more dangerous due to decreased friction, and it's essential to slow down gradually to avoid skidding.The correct option is 1.
Step-by-step explanation:
Approaching Icy Bridges: Safe Driving Practices
When you approach a bridge with ice, the correct action to take is to slow down and not apply brakes suddenly. This is because bridges often ice over before the rest of the road due to their exposure to the air on all sides, which can lead to a decrease in temperature more quickly. If you apply your brakes suddenly on ice, you risk losing control of your vehicle since the friction between your tires and the icy surface is significantly reduced.
To understand the science behind this, we can look at the relationship between static and kinetic friction. When your car is moving, there is kinetic friction between the tires and the road. If you suddenly apply brakes, you can exceed the limit of static friction that keeps the car from sliding, leading to a skid. By slowing down gradually, you maintain the maximum amount of static friction possible, providing better control of your vehicle.
An example where more friction is desirable is in sports like rock climbing. Climbers use rubber-soled shoes that increase the friction between their feet and the rock, offering better grip to support their weight and prevent slipping.