A transportation engineering study requires the calculation of the total number of cars that pass through an intersection over a 24-h period. A summer student visits the intersection at various times during the course of a day and counts the number of cars that pass through the intersection in a minute. Utilize the data summarized in Table 1 to come up with the "best" estimate for the total number of cars that pass through the intersection per day. Justify your estimation. Time Rate Time Rate Time Rate 12:00 midnight 2:00 AM 6:00 PM 7:00 PM 2 9:00 AM 11 20 10:30 AM 10 4:00 AM 11:30 AM 11 8:00 PM 8. 5:00 AM 12:30 PM 12 9:00 PM 10 6:00 AM 2:00 PM 8. 10:00 PM 8 7:00 AM 4:00 PM 11:00 PM 8:00 AM 23 5:00 PM 26 12:00 midnight Table 1: Traffic flow rate (cars/min) for an intersection measured at various times within a 24-h period. 102

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