The savings USPS has enjoyed thus far are indeed notable: In the Midwest, the organization was able to consolidate transportation resulting in annual savings of $1.3 million. Savings on the West Coast were even more substantial: Transportation reductions resulted in a savings of $3.7 million per year.
These days transportation savings are particularly critical, considering USPS says that every 1-cent increase in the price of gasoline costs results in another $8 million in fuel costs for the organization. Although $5 million annual transportation savings from those two model runs may be a small portion of overall USPS transportation expenses, if USPS were to use similar approaches throughout its entire network, the savings could add up.
The savings also result in a reduction in CO2 emissions, which scientists have linked to global warming. All told, USPS reports a carbon dioxide savings of 6,350 tons. If those reductions could be monetized, the value of offsetting those CO2 emissions would be $47,000 per year.
[ To learn more about carbon-reducing technology, please read "Carbon-measuring software evolves." ]
Thus far, USPS appears to have limited the application of HCAP to mail transported in the United States. However, it's evident that the technology could be applied to international mail as well as with appropriate adjustments to the system. Although USPS hasn't provided information regarding such direction, given the savings to date, I'd be surprised if postal officials didn't pursue that further.