MOA_AMATS_Boundary

Summary This is the 2024 AMATS Area Boundary, showing all areas where AMATS funds can be used. AMATS coordinates transportation improvements in Anchorage. In areas with 50,000 or more people, a Metropolitan Planning Organization (MPO) works to balance transportation goals between state and local needs. AMATS is the MPO for the Anchorage region. Description Every ten years, with each census, MPO boundaries are reviewed with input from the State and local transportation operators. After the 2020 Census, the AMATS boundary was updated to include all Urbanized Areas identified by the U.S. Census Bureau. The Census defines these areas based on population density, using Block Group lines that can create uneven shapes, which don’t always fit transportation planning needs. Federal law lets States and MPOs adjust these areas for transportation purposes, making the adjusted boundary larger, but not smaller, than the Census Urbanized Areas. The AMATS area includes all of the Municipality of Anchorage except for the smaller communities of the Turnagain Arm region, including Girdwood. The gap in population density between the northern and southern sections of the area is too wide to be included in the boundary according to how census urbanized boundaries are calculated.摘要：本数据集为2024年AMATS区域边界，明确所有可使用AMATS专项资金的范围。AMATS负责统筹安克雷奇地区的交通优化工作。当区域常住人口达5万人及以上时，需由城市规划组织（Metropolitan Planning Organization）平衡州级与地方的交通规划目标，而AMATS正是安克雷奇地区对应的城市规划组织。 数据集说明：每十年一次的人口普查周期内，城市规划组织会结合州政府及地方交通运营主体的反馈，对区域边界进行复核更新。2020年人口普查完成后，AMATS区域边界已完成调整，纳入美国人口普查局（U.S. Census Bureau）认定的全部城市化区域。美国人口普查局以人口密度为核心依据，采用街区组（Block Group）边界线划定城市化区域，由此生成的边界形状往往不规则，且未必适配交通规划的实际需求。根据联邦法律，各州及城市规划组织可基于交通规划目标调整此类区域边界，调整后的边界不得小于普查划定的城市化区域，仅可适度扩大范围。AMATS覆盖安克雷奇自治市全域，但不包含特恩纳根湾（Turnagain Arm）地区的小型社区，例如格德伍德（Girdwood）。由于该区域南北两部分的人口密度差距过大，不符合人口普查城市化边界的划定规则，因此未被纳入AMATS的边界范围。