Feasibility Plan for Maximum Truck to Rail Diversion in Virginia’s I-81 Corridor
Figure 10. Truck Percentages Averaged Over All Highway Segments, 2008 Rankings Among Routes Over 1,000 AADDT VA 405 VA 406 US 460 US 15 US 23 I-95 US 58 VA 337 Alt VA 220 Alt I-295 US 220 I-85 I-77 I-81 VA 292 0.0%
5.0%
10.0%
15.0%
20.0%
25.0%
30.0%
Truck Percentage
Source: Analysis of Virginia 2008 count data.
Types of Truck Moves Every truck movement on I-81 falls into one of three categories: 1. Through truck movements, which begin and end in states other than Virginia. 2. Inbound and outbound truck movements. These are truck trips that begin in another state and end in Virginia, or begin in Virginia and end in another state. 3. Internal truck movements, which begin and end in Virginia. Technical work for the I-81 Corridor Improvement Study suggested that 58.2 percent of trucks on I-81 were passing through Virginia. Virginia’s TRANSEARCH2 dataset also suggests the largest share of I-81 truck traffic is associated with through truck movements. The data mapped on Figure 11 suggests that I-81 is Virginia’s leading through-truck route (followed by I-95 and I-77). Figure 12 suggests that I-81 handles less Virginia-oriented traffic (inbound, outbound, or internal flows) than through trucks.
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TRANSEARCH is a commercial data product of Global Insight, Inc. It provides estimates of freight movement (tons and units) between North American origin and destination regions, by commodity class and transportation mode. It includes both public-source and proprietary data.
Cambridge Systematics, Inc.
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