Since many of the integrated carriers interline (use passenger carrier lift capacity), and the freight forwarder will use both the passenger and all-cargo carriers, the ideal site is one that allows all service segments to be located together. This means identifying a site that balances the passenger carriers' desire to be located as close as possible to terminal and the all-cargo carriers' desire to be located adjacent to the regional highway system. In addition, having cargo operations located in one area will help to reduce truck traffic on the airport access system. A reduction in truck movements can have a substantial impact on emissions and ground traffic levels. The site should not be so close to the terminal that it precludes future terminal expansion options.