摘要: |
In 2010, through its Lets Rebuild America initiative, the U.S. Chamber created something unprecedented the Transportation Performance Index (TPI) to quantify how well transportation systems are meeting the demands of the nation. The TPI includes measures of the performance of infrastructure as it meets the needs of productive businesses working toward economic prosperity. Overarching criteria include availability and accessibility; quality of service (reliability, predictability, and safety); and the capacity to accommodate growth in demand. The specific indicators that combine to form the TPI reflect the needs of businesses large and small in the context of international and domestic trade. And the TPI includes measures for both passenger and freight transportation. |