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The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway design and construction throughout the United States. Despite its name, the association represents not only highways but air, rail, water, and public ...
CTPP data are available online and can be accessed using an online database housed on the CTPP website or downloaded via an FTP site. This portal contains the CTPP tabulations from the 1990 decennial census, the 2000 decennial census, the 2006-2010 5-year ACS, and 2012-2016 5-year ACS.
Since the policy on numbering and designating US Highways was updated in 1991, AASHTO has been in the process of eliminating all intrastate U.S. Highways under 300 miles (480 km) in length, "as rapidly as the State Highway Department and the Standing Committee on Highways of the American Association of State Highway and Transportation Officials ...
AASHTO does, however, apply similar standards as to new U.S. Highways, requiring a new business Interstate to meet certain design standards. [2] Business Interstates are more commonly found in the western regions of the United States, as well as both across the Great Plains and in the state of Michigan.
AASHTO established a new task force in 2003 to study expansion of the system. [2] [9] [10] The task force included state and federal highway officials and representatives from bicycling organizations. In October 2008, AASHTO approved a national-level corridor and route designation plan. [11]
National Transportation Knowledge Networks (TKNs) have been established in three geographic regions: east, midwest, and west. These TKNs pool expertise and knowledge sharing while leveraging resources through lending agreements and coordinated acquisitions or resources. [8] NTL acts as a sponsor and national representative for the TKNs.
2. Optimize your route. Optimizing your travel routes can help you save time, money, and effort. Apart from arriving at your destination faster, you can save on fuel, accommodations, and other ...
Some U.S. Routes are given directional suffixes to indicate a split of the main route — for instance, U.S. Route 25 (US 25) splits into US 25E (east) and US 25W (west) between Newport, Tennessee, and North Corbin, Kentucky, and US 9W is an alternate of U.S. Route 9 between Fort Lee, New Jersey, and Albany, New York.