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 the lost time per phase?
💡 Hint: Refer to the data provided in the problem.
Question 2
Easy
Define cycle length.
💡 Hint: Think about what 'complete' means in this context.
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 the term 'cycle length' refer to?
- Time for a complete traffic signal sequence
- Duration of green light only
- Amber light duration
💡 Hint: Consider all phases involved in a signal operation.
Question 2
True or False: Lost time affects the actual green time available.
- True
- False
💡 Hint: Think about how signals operate during transitions.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A four-legged intersection with different flows of traffic needs to determine an efficient cycle length. If traffic is consistently high and flows are 800 vph (North-South) and 600 vph (East-West), what would be the optimal cycle length considering a lost time of 2.5 seconds and a V/C ratio of 0.9?
💡 Hint: Mind the saturation flow and adjust your calculations accordingly.
Question 2
With given traffic flows of 750 vph (North-South) and 500 vph (East-West), what would the total delay be for one full cycle if the effective green time allocated is 18 seconds?
💡 Hint: Focus on which values are needed from the relationships outlined with Webster’s Delay formula.
Challenge and get performance evaluation