NG-911 Street Centerline

A spatial data layer containing line geometry features for representing the center line of roadways in Baltimore City, as documented in the City's enterprise GIS database and Department of Transportation right-of-way data sources. The data contains information on street address ranges, speed limits, one-way designations, street types, and many other street related data. The data employs what's referred to as the Next Generation 9-1-1 (NG911) schema/data standard, which has specific attribute field names, field formats, and data standards to support the standardization required by a future public safety NG911 system, as set forth by the National Emergency Number Association (NENA). The data contained in this data layer (number of features, accuracy, locations) will match the data in the other street centerline layer on Open Baltimore (“Street Centerline (City Native Schema)”), just the format of the attribute field names and data standards will be different, as well as some internal City attributes fields not relevant to a NG911 system are not included. This data also employs the WGS 1984 Web Mercator (auxiliary sphere) projected coordinate system (WKID: 3857, EPSG: 102100)Change Log2021-12-8:- Added FY2021 data- Metadata added- Columns renamed to a standard format- Agency names reformatted with Workday conventionsData DictionaryData Dictionary

Data and Resources

Field Value
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://data.baltimorecity.gov/maps/baltimore::ng-911-street-centerline
issued 2021-12-08T00:09:43.000Z
landingPage https://data.baltimorecity.gov/maps/baltimore::ng-911-street-centerline
license http://creativecommons.org/licenses/by/3.0
metadata_type geospatial
modified 2022-06-27T21:39:16.000Z
old-spatial -76.7129,39.1997,-76.5279,39.3725
publisher Baltimore City
resource-type Dataset
source_datajson_identifier true
source_hash 5f951c5e6a074cc07cf47bfe3271555e6a007a8b
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-76.7129, 39.1997], [-76.7129, 39.3725], [-76.5279, 39.3725], [-76.5279, 39.1997], [-76.7129, 39.1997]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • 9-1-1
  • address
  • address-range
  • amerigeo
  • amerigeoss
  • cad
  • centerline
  • city-government
  • city-services
  • ckan
  • egis
  • esri
  • feature-class
  • geo
  • geo-spatial
  • geodatabases
  • geographic
  • geospatial
  • geoss
  • gis
  • line
  • national
  • nena
  • nextgen-9-1-1
  • ng911
  • north-america
  • public-safety
  • road
  • roadway
  • street
  • streets
  • transportation
  • united-states
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer baltimore_city
metadata_created 2025-11-20T14:24:59.304573
metadata_modified 2025-11-20T14:24:59.304577
notes <p>A spatial data layer containing line geometry features for representing the center line of roadways in Baltimore City, as documented in the City's enterprise GIS database and Department of Transportation right-of-way data sources. The data contains information on street address ranges, speed limits, one-way designations, street types, and many other street related data. The data employs what's referred to as the Next Generation 9-1-1 (NG911) schema/data standard, which has specific attribute field names, field formats, and data standards to support the standardization required by a future public safety NG911 system, as set forth by the National Emergency Number Association (NENA). The data contained in this data layer (number of features, accuracy, locations) will match the data in the other street centerline layer on Open Baltimore (“Street Centerline (City Native Schema)”), just the format of the attribute field names and data standards will be different, as well as some internal City attributes fields not relevant to a NG911 system are not included. This data also employs the WGS 1984 Web Mercator (auxiliary sphere) projected coordinate system (WKID: 3857, EPSG: 102100)</p><p><b>Change Log</b></p><p>2021-12-8:<br />- Added FY2021 data<br />- Metadata added<br />- Columns renamed to a standard format<br />- Agency names reformatted with Workday conventions<b><br /></b></p><p><b>Data Dictionary</b></p><p><a href='https://data.baltimorecity.gov/documents/d72d1c78ce4d46c8ba4e2cb60d608d89/about' rel='nofollow ugc'>Data Dictionary</a><b><br /></b></p><div style='color: rgb(0, 0, 0); font-size: medium;'></div>
num_resources 6
num_tags 33
title NG-911 Street Centerline