Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
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 related to the topic.
Question 1
Easy
What is a valley curve?
💡 Hint: Think about the shape of a valley.
Question 2
Easy
What does SSD stand for in road design?
💡 Hint: What do you need to safely stop your vehicle?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does a valley curve help achieve in road design?
- Increase gradient
- Ensure smooth transitions
- Reduce visbility
💡 Hint: Think about the driving experience on curves.
Question 2
True or False: Comfort criteria focus solely on the length of the curve.
- True
- False
💡 Hint: Remember the factors involved in comfort.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have a valley curve with descending gradient n = 1 in 20 and ascending n = 1 in 35. For a design speed of 100 km/h, calculate L considering both comfort and safety criteria.
💡 Hint: Do not forget to evaluate both cases; which conditions govern your final answer?
Question 2
Given a scenario where poor visibility conditions lead to frequent accidents at night, analyze how you would redesign the valley curve with a focus on safety.
💡 Hint: How does sight distance adapt to curve length?
Challenge and get performance evaluation