Description: The Airports dataset including other aviation facilities as of July 13, 2018 is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics's (BTS's) National Transportation Atlas Database (NTAD). The Airports database is a geographic point database of aircraft landing facilities in the United States and U.S. Territories. Attribute data is provided on the physical and operational characteristics of the landing facility, current usage including enplanements and aircraft operations, congestion levels and usage categories. This geospatial data is derived from the FAA's National Airspace System Resource Aeronautical Data Product.
Copyright Text: Assistant Secretary for Research and Technology/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). The Federal Aviation Administration (FAA) develops and maintains the textual data from which this geospatial layer was derived.
Description: The official Metropolitan Planning Organization boundary for the Mid-America Regional Council. This boundary was approved by Missouri Governor, Jay Nixon on 8\19\2009. MARC functions as the Metropolitan Planning Organization (MPO) for greater Kansas City. The planning boundary does not extend to the entire MARC region. Two MARC member counties--Miami County in Kansas and Ray County in Missouri--are not included within this boundary.Update 2013 - Miami County was added to MPO boundaryUpdate 2015 - A small sliver of Lafayette County was added to MP Boundary
Description: FHWA and the Census Bureau differ in defining and describing urban and rural areas. The Census Bureau defines urban areas solely for the purpose of tabulating and presenting Census Bureau statistical data. A number of Federal agency programs use the Census definitions as the starting point (if not the basis) for implementing and determining eligibility for a variety of funding programs.According to 23 U.S.C. 101(a)(33), areas of population greater than 5,000 can qualify as urban, in contrast to the Census Bureau’s threshold of 2,500. There are also differences in the terminology used to describe sub-categories of urban areas. FHWA refers to the smallest urban area as a “small urban area”, while the Census Bureau refers to “urban clusters”.
Description: FHWA and the Census Bureau differ in defining and describing urban and rural areas. The Census Bureau defines urban areas solely for the purpose of tabulating and presenting Census Bureau statistical data. A number of Federal agency programs use the Census definitions as the starting point (if not the basis) for implementing and determining eligibility for a variety of funding programs.Federal transportation legislation allows for the outward adjustment of Census Bureau defined urban boundaries (of population 5,000 and above) as the basis for development of adjusted urban area boundaries for transportation planning purposes. By Federal rule, these adjusted urban area boundaries must encompass the entire Census-designated urban area (of population 5,000 and above) and are subject to approval by the Secretary of Transportation (23 USC 101(a) (36)-(37) and 49 USC 5302(a) (16)-(17)).10 According to 23 U.S.C. 101(a)(33), areas of population greater than 5,000 can qualify as urban, in contrast to the Census Bureau’s threshold of 2,500. There are also differences in the terminology used to describe sub-categories of urban areas. FHWA refers to the smallest urban area as a “small urban area”, while the Census Bureau refers to “urban clusters”. The Federal government does not require Census urban boundary adjustments. States may adopt the Census boundaries as is, or adjust them for transportation planning purposes. The only official requirement is adjusted boundaries must include the original urban area boundary defined by the Census Bureau in its entirety. In other words, any adjustment must expand, not contract, the Census Bureau urban area boundary. The adjusted urbanized area boundaries can also include other areas that are “urban” in character but do not meet the Census Bureau’s population threshold (e.g., high density industrial or commercial areas, urban parks, etc.). The adjusted boundaries can also be expanded to ensure major roads do not alternate between urban and rural designations. This geography, called the “adjusted urbanized area” boundary, includes locations with a population of 50,000 or greater.
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Description: The data in the Alternative Fueling Station Locator are gathered and verified through a variety of methods. The National Renewable Energy Laboratory (NREL) obtains information about new stations from trade media, Clean Cities coalitions, the Submit New Station form on the Station Locator website, and through collaborating with infrastructure equipment and fuel providers, original equipment manufacturers (OEMs), and industry groups.
Users submitting updates through the "Submit New Station" or "Report a Change" forms will receive an email confirmation of their submittal. NREL will verify station details before the station is added or updated in the Station Locator. The turnaround time for updates will depend on the completeness of the information provided, as well as the responsiveness of the station or point of contact.
NREL regularly compares its station data with those of other relevant trade organizations and websites. Differences in methodologies, data confirmation, and inclusion criteria may result in slight variations between NREL's database and those maintained by other organizations. NREL also collaborates with alternative fuel industry groups to identify discrepancies in data and develop data sharing processes and best practices. NREL and its data collection subcontractor are currently collaborating with natural gas, electric drive, biodiesel, ethanol, hydrogen, and propane industry groups to ensure best practices are being followed for identifying new stations and confirming station changes in the most-timely manner possible.
Copyright Text: The Alternative Fuels Data Center (AFDC) is a resource of the U.S. Department of Energy's Vehicle Technologies Office. The National Renewable Energy Laboratory is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy LLC.
Description: The U.S. Census Bureau defines and delineates the geographic boundaries for urban areas based on residential population after each decennial Census. Census-defined urban areas are used to summarize and report data collected by most Federal agencies. The Census definition of urban area includes urbanized areas of 50,000 or more population and urban clusters of at least 2,500 and less than 50,000 population. The Census Bureau uses the term "urban area" to refer to both urbanized areas and urban clusters collectively. This represents the most commonly used definition for urban areas and is based on a consistent methodology across all States.Beginning with the 2000 decennial Census, the Census Bureau has used a geographic information system (GIS) methodology to identify and construct the boundaries for urban areas based on aggregations of Census Blocks. Each urban area is built outward from a core of Census Blocks that meet an initial population density threshold; new blocks are added until the population density falls below a specified threshold, or until the urban area bumps against an adjacent urban area.Census defined urban area boundaries may not coincide with the jurisdictional boundaries of incorporated cities or towns, counties, or even States. Parts of a particular urban area (e.g., Washington, D.C. or Philadelphia, Pennsylvania) can exist in two or more States.