Practice question

What is the purpose of the Empirical Bayes (EB) method in road safety analysis?

To calculate speed limits for road segments
To combine observed crash data with predicted crash frequency from safety performance functions to produce a more reliable safety estimate
To determine the cost-effectiveness of enforcement programs
To measure vehicle occupant injury severity

Answer: B — To combine observed crash data with predicted crash frequency from safety performance functions to produce a more reliable safety estimate

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