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 does the variable k represent in the Underwood model?
💡 Hint: Think about how many cars there are in a certain length of road.
Question 2
Easy
Explain how the Underwood model predicts speed as density increases.
💡 Hint: Consider the behavior of vehicles as they become closely packed.
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 'v_f' represent in the Underwood model?
- Traffic flow rate
- Free flow speed
- Density constant
💡 Hint: Think about the top speed vehicles can achieve without constraints.
Question 2
True or False: The Underwood model predicts that speed reaches zero when density is zero.
- True
- False
💡 Hint: Consider what happens in highly congested scenarios.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If the free flow speed is 80 km/h and k0 is 250 veh/km, calculate the speed when density is 125 veh/km. Explain your steps.
💡 Hint: Square away the substitution before calculating the exponent!
Question 2
Describe how you would use the Underwood model in a real-world scenario for traffic engineering.
💡 Hint: Consider how you would monitor a highway’s traffic conditions.
Challenge and get performance evaluation