An engineer, wishing to determine the travel time and average speed along a section of an urban highway as part of an annual trend analysis on traffic operations, conducted a travel time study using the floating-car technique. He carried out 10 runs and obtained a standard deviation of ±3 mi/h in the speeds obtained. If a 5% significance level is assumed, is the number of test runs adequate?
An engineer, wishing to determine the travel time and average speed along a section of an urban highway as part of an annual trend analysis on traffic operations, conducted a travel time study using the floating-car technique. He carried out 10 runs and obtained a standard deviation of ±3 mi/h in the speeds obtained. If a 5% significance level is assumed, is the number of test runs adequate?
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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An engineer, wishing to determine the travel time and average speed along a section
of an urban highway as part of an annual trend analysis on traffic operations, conducted
a travel time study using the floating-car technique. He carried out 10 runs and
obtained a standard deviation of ±3 mi/h in the speeds obtained. If a 5% significance
level is assumed, is the number of test runs adequate?
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