The U.S. Postal Service has experienced a significant decline in mail volume in recent years, yet its contracted surface transportation remains largely unchanged. While mail volume dropped almost 16 percent from fiscal year 2008 to 2010, the Postal Service contracted out around 1 percent more miles of highway transportation over the same period. During the same time, the Postal Service has had considerable success minimizing the number of labor hours employees spend on mail processing.
The following factors may have mitigated the effects on transportation from a volume drop: