18.2.2.2.1 - Case 1 Length of valley curve greater than stopping sight distance (L>S)
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What defines a valley curve?
💡 Hint: Think about the shape and purpose of road curves.
What do we consider when determining headlight sight distance?
💡 Hint: Relate the question to night driving conditions for clarity.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What condition must the length of a valley curve satisfy when it exceeds the stopping sight distance?
💡 Hint: Think about where visibility would be lowest on the curve.
True or False: A valley curve provides more comfort for passengers when designed appropriately.
💡 Hint: Consider how passengers react to smooth rides.
Get performance evaluation
Challenge Problems
Push your limits with advanced challenges
Considering a valley curve with specific gradients, calculate both the comfort and safety lengths and determine the most appropriate design for SSD.
💡 Hint: Ensure all parameters used in your calculations are aligned with your scenario.
Analyze the impact of improper valley curve design in terms of accident statistics and passenger comfort.
💡 Hint: Draw data from real-world scenarios to support your argument.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.