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Analysis of the Vehicle Inventory and Use Survey for Trucks ... - About

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2.3 Traffic Regions <strong>and</strong> States<br />

Besides evaluating <strong>the</strong> truck fleet at <strong>the</strong> national level, our analysis also focused on <strong>the</strong> regional<br />

truck fleets. Given <strong>the</strong> small sample <strong>of</strong> trucks surveyed, analyzing <strong>the</strong> truck fleet at <strong>the</strong> state<br />

level requires careful analysis <strong>and</strong> an underst<strong>and</strong>ing <strong>of</strong> <strong>the</strong> sample size used to generate truck<br />

populations.<br />

# 5 traffic regions (see Figure 2.3-1)<br />

- North Central<br />

- North East<br />

- South Atlantic<br />

- South Gulf<br />

- West<br />

# 50 States <strong>and</strong> Washington, D.C.<br />

6

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