Description: Site/Structure Address Points provide a more accurate representation of the true location of a civic address. At times, depending on the point placement, address points located on a structure can fall in a different ESN or Community than interpolated location off the address ranged road centerline for that address. For this reason, Address Points are a highly recommended layer to enhance the location validation accuracy of a NG9-1-1 system.
Description: The baseline layer needed for validation of civic address location information is an address ranged road centerline. This layer’s attribute structure is what will absorb the content and purpose currently served by the MSAG in E9-1-1 systems. ESN and MSAG specific fields will be maintained as long as a legacy system interface is needed, and are expected to be deleted from the data model in the future as a fully realized NG9-1-1 i3 system is put in place.
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