Traffic Engineering Questions and Answers – Underwood’s Exponential Model

«
»

This set of Traffic Engineering Question Bank focuses on “Underwood’s Exponential Model”.

1. According to Underwood’s Exponential Model, what is the relation between speed and density?
a) Linear
b) Parabolic
c) Elliptical
d) Exponential
View Answer

Answer: d
Explanation: According to Underwood’s Exponential Model the relation between speed and density is exponential. This model was made to overcome the limitation of Greenberg’s Logarithmic model.

2. Which of the following given options shows the correct relationship between speed and density according to Underwood’s Exponential Model?
a) v = vf.e-k/ko
b) v = vf/e-k/ko
c) v = vf*e-k/ko
d) v = vf+e-k/ko
View Answer

Answer: a
Explanation: v = vf.e-k/ko is the correct relationship between speed and density according to Underwood’s Exponential Model. Underwood’s Exponential Model is a macroscopic stream model.

3. What is the drawback of Underwood’s Exponential Model?
a) Cannot be used for predicting speeds at high densities
b) Cannot be used for predicting speeds at low densities
c) Cannot be used for predicting flow at high densities
d) Cannot be used for predicting mean speed at high densities
View Answer

Answer: a
Explanation: The drawback of Underwood’s Exponential Model is that it cannot be used for predicting speeds at high densities. This is because, in this model, speed becomes zero only when the density reaches infinity.
Sanfoundry Certification Contest of the Month is Live. 100+ Subjects. Participate Now!
advertisement
advertisement

Sanfoundry Global Education & Learning Series – Traffic Engineering.

To practice Traffic Engineering Question Bank, here is complete set of 1000+ Multiple Choice Questions and Answers.

advertisement
advertisement

Leave a Comment

Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & technical discussions at Telegram SanfoundryClasses.