33.4.1 - Greenberg’s Logarithmic Model
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Practice Questions
Test your understanding with targeted questions
What does the logarithmic model express about the relationship between speed and density?
💡 Hint: Think about how logarithms work.
Define free flow speed.
💡 Hint: What does it mean when there are no delays in traffic?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does Greenberg’s model predict about speed as density approaches zero?
💡 Hint: Think about the extremes of the model.
Is it true that Greenberg's logarithmic model can accurately predict speeds at all densities?
💡 Hint: Consider the limitations discussed.
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Challenge Problems
Push your limits with advanced challenges
Calculate the speed when the free flow speed is 50 km/h, jam density is 150 vehicles/km, and density is 75 vehicles/km using Greenberg’s model.
💡 Hint: Use the logarithm rules to compute.
Discuss the implications of the model predicting infinite speed at zero density. How can this affect traffic planning?
💡 Hint: Consider how planners use models for predictions in real contexts.
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