A one way, two-lane road is shared by buses and cars. Buses travel at speed 40 mph and carry 20 people. Cars travel at speed 60 mph and carry 2 people. The fraction of vehicles that are buses passing a stationary observer is 0.2. Answer the following questions: (a) From the perspective of a stationary observer, what is the average number of passengers per vehicle? (b) What fraction of the vehicles on an aerial photograph would be buses? (c) If we take a photo of the road, what is the average number of passengers per vehicle based on this photo?

A one way, two-lane road is shared by buses and cars. Buses travel at speed 40 mph and carry 20 people. Cars travel at speed 60 mph and carry 2 people. The fraction of vehicles that are buses passing a stationary observer is 0.2. Answer the following questions: (a) From the perspective of a stationary observer, what is the average number of passengers per vehicle? (b) What fraction of the vehicles on an aerial photograph would be buses? (c) If we take a photo of the road, what is the average number of passengers per vehicle based on this photo?

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter4: Traffic Engineering Studies

Section: Chapter Questions

Problem 7P

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