Grip and road surface: practice and explanations
The wet, icy, muddy or leaf-covered bottom reduces adherence. We need lower speeds, more braking margin and progressive maneuvers, even in the straight. ABS does not create adhesion.
Practice
Grip and road surface
When the bottom changes
Rain, ice, mud and leaves can reduce useful contact between tire and road. All other conditions being equal, more space is needed to brake. A wrinkled asphalt instead offers a greater grip in the comparison proposed by the quizzes.
Curve and straight
The loss of grip is not just about the curve: even a braking on a straight can cause you to lose control. Reduce speed and use steering, throttle and brake with progressiveness.
How to verify the concept
Distinguish "increases" from "decreases" and check what size is mentioned: grip, braking or slipping. Then compare the same conditions in a different question.
Test the concept
True or false?
Tyre-road adhesion increases if the asphalt is wrinkled
Italian text
La forza aderente aumenta se l'asfalto è rugoso
Answer and explanation
Correct answer: TRUE
The wet, icy, muddy or leaf-covered bottom reduces adherence. We need lower speeds, more braking margin and progressive maneuvers, even in the straight. ABS does not create adhesion.
True or false?
Tyre-road adhesion decreases if the asphalt is wet
Italian text
La forza aderente diminuisce se l'asfalto è bagnato
Answer and explanation
Correct answer: TRUE
The wet, icy, muddy or leaf-covered bottom reduces adherence. We need lower speeds, more braking margin and progressive maneuvers, even in the straight. ABS does not create adhesion.
True or false?
Tyre-road adhesion increases if the asphalt is wet
Italian text
La forza aderente aumenta se l'asfalto è bagnato
Answer and explanation
Correct answer: FALSE
Water reduces useful adherence: wet asphalt does not increase it. The wet, icy, muddy or leaf-covered bottom reduces adherence. We need lower speeds, more braking margin and progressive maneuvers, even in the straight. ABS does not create adhesion.