During measurement in spot speed study, a total of 1000 vehicles were observed. 85 per centile and 15 percentile speeds were obtained as 40 kmph and 10 kmph respectively. Find the number of vehicles moving between speeds of 10 kmph and 40 kmph.

During measurement in spot speed study, a total of 1000 vehicles were observed. 85 per centile and 15 percentile speeds were obtained as 40 kmph and 10 kmph respectively. Find the number of vehicles moving between speeds of 10 kmph and 40 kmph.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter6: Fundamental Principles Of Traffic Flow

Section: Chapter Questions

Problem 4P

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Concept explainers

Fundamental principles of travel flow

To better represent the flow, the traffic flow is generally constrained along a one-dimensional pathway, like a travel lane and various relationships have been established, some of the relationships are outlined below.

Question

During measurement in spot speed study, a total of 1000 vehicles were observed. 85 per
centile and 15 percentile speeds were obtained as 40 kmph and 10 kmph respectively. Find the
number of vehicles moving between
speeds of 10 kmph and 40 kmph.

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