When descending a steep hill, proper snub braking prevents brake fade and maintains vehicle control. In what sequence should a driver perform the steps of the snub braking technique on a downgrade?
- 1Downshift to an appropriate low gear before starting down the grade.
- 2Allow the vehicle speed to reach the designated safe speed.
- 3Apply the brakes firmly until speed drops 5 mph below the safe speed.
- 4Release the brakes completely until vehicle speed reaches the safe speed again.
Answer
The proper sequence begins with selecting a low gear prior to the grade, letting speed reach the safe limit, braking firmly to 5 mph below safe speed, and releasing brakes until speed reaches the safe limit again.
The correct procedure for snub braking requires choosing a low gear before descending, letting speed reach the safe threshold, applying firm brake pressure to drop speed by 5 mph, and then fully releasing the brakes to allow cooling before repeating the cycle.
Step-by-Step Solution
Key Concept
The snub braking technique combines engine retarding power with intermittent, firm brake applications to prevent brake overheating and fade on long downgrades.
Estimated Time:45s