> Of the over 1,500 individual operating shifts analyzed as part of this study, the average driving distance observed was 31.73 miles, with a maximum observed d

> Of the over 1,500 individual operating shifts analyzed as part of this study, the average driving distance observed was 31.73 miles, with a maximum observed driving distance of 127.36 miles and a minimum distance of 1.45 miles. Calculating the set standard deviation, sigma was found to be 15.17 miles. Again assuming normality based on the driving distance distribution, a 99.7% confidence interval on route distance was determined and found to be zero to 77.23 miles. Similarly to route duration, doubling the route distance to reflect daily operating distances, it is found that on average school buses travel 73.46 miles, with a 99.7% cutoff on driving distance of 154.46 miles.