Practice Case 1 Length Of Valley Curve Greater Than Stopping Sight Distance (l>s) (18.2.2.2.1)

Practice: Case 1 Length of valley curve greater than stopping sight distance (L>S)

Lesson 18.2.2.2.1Vertical Alignment - 2

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What defines a valley curve?
Show hintHide hint
Think about the shape and purpose of road curves.
Question 2.
What do we consider when determining headlight sight distance?
Show hintHide hint
Relate the question to night driving conditions for clarity.
3Question 3.
What condition must the length of a valley curve satisfy when it exceeds the stopping sight distance?
- The curve must have an infinite radius.
- The sight distance is minimum at the lowest point.
- The headlight beam must have a height less than S.
Show hintHide hint
Think about where visibility would be lowest on the curve.
4Question 4.
True or False: A valley curve provides more comfort for passengers when designed appropriately.
- True
- False
Show hintHide hint
Consider how passengers react to smooth rides.
Question 5.
Considering a valley curve with specific gradients, calculate both the comfort and safety lengths and determine the most appropriate design for SSD.
Show hintHide hint
Ensure all parameters used in your calculations are aligned with your scenario.
Question 6.
Analyze the impact of improper valley curve design in terms of accident statistics and passenger comfort.
Show hintHide hint
Draw data from real-world scenarios to support your argument.

4 more questions in this section. Enroll free to practise them all.