development of site/structure address points gis data for

Development of Site/Structure Address Points GIS Data for 9-1-1

Cheryl Benjamin GIS Program Office

NYS Office of Information Technology Services

Background

• Late 2011 New York State SAM Project initiated

• SAM Project goals: • Create a publically available statewide file of structure based Address Points • File will support NG9-1-1, 9-1-1 and other purposes • Build to NENA Standards

• Reviewed NENA Standards • Data Formats for 9-1-1 Data Exchange & GIS Mapping, Data

Collection and Maintenance, and draft NG9-1-1 GIS Data Model • No guidance on where to place a point or how many

• NYS submitted NENA Issue Identification Form in January 2012

October 2013 NSGIC Annual Conference – Kansas City, Missouri

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NENA Deliberations

• Discussion at February 2012 NENA Development Conference

• Debate and discussion on definition of “address” • Agreed to move forward as an Informational Document

• Workgroup formation planning meeting at June 2012 NENA Annual Conference

• Two co-chairs identified • Richard Kelly, 911 Datamaster (Private sector) • Cheryl Benjamin, NYS GIS Program Office (Public sector)


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Formation of Work Group

• Prepared Scope of Work • Notice of Interest to NENA Members in July

• Forwarded to NSGIC and State GIS Organizations

• Initial Meeting August 15, 2012 • HUGE interest in Work Group

• 67 members by initial meeting, 95 by December • Currently about 70 members

• Initially one hour weekly meetings, now 90 minutes • 3-4:30pm ET, Wednesdays • Typically 40-45 people on a call

• Document development by collaboration


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Site/Structure Address Point (SSAP) Work Group

• To be addressed in the document: • What type of addresses are we mapping • If/when a driveway access point is needed • If/when should more than one driveway access point be

represented • If/when should more than one structure access point be

represented • Jurisdictional boundary lines intersecting a parcel, site, or

structure • Using a hierarchical addressing system (e.g. business park

or apartment complex) • Spatial accuracy recommendations for placement


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SSAP Document Objective

• Guidelines for developing address points data for use in 9-1-1 and public safety applications

• Address points represent addresses assigned by local addressing authorities

• While there are other uses outside of 9-1-1, their placement requirements not considered

• Out of scope: • Address assignment • Labeling and symbolization • Data structure


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SSAP Document Structure

• Uses NENA Informational Document template • Section 1 – Executive overview • Section 2 – Introduction

• Operational, technical, and security impacts • Cost factors • Acronyms and definitions

• Section 3 – Technical Description • Section 4 – Recommended readings and references


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Section 3-Technical Description

• Address Point Usage in Public Safety Applications • NG 9-1-1 Location Validation • NG 9-1-1 Call Routing • 9-1-1 Map Display • Computer Aided Dispatch • Vehicle Routing • Emergency Notification

• Address Points vs. Access Points • Access point directs emergency responders to an address

• Address Point Placement Guidelines – Methodology


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Section 3-Technical Description

• Accuracy Considerations • Positional accuracy

Imagery GPS data collection Source data

• Attribute accuracy Age/currency of imagery Age/currency of source data Completeness

• Topology

• Best practices • Metadata


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Point Placement Methodologies

• Currently 7 methodologies identified • Placement of an Address Point Based on:

• Parcel • Property Access • Structure(s) • Site • Exterior Structure Entry • Interior Locations Within a Structure • Geocode Addresses off of Road Centerlines


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Methodologies Structure

• Started with what we already knew how to do • Calculated and Manual Point Placement options

• Placement may be an interim solution

• Illustrative graphics • Advantages and disadvantages • Notes • Special Cases • Methodology Usage Matrix

• Quick reference as to the suitability of each methodology


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Calculated Placement - Parcel


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Example Notes (Parcel)

Notes: • Address point must fall within the parcel

boundary. In some situations (e.g. L-shaped lots) this may require setting the GIS software’s setting/configuration to always place the point inside the polygon or manual adjustment.

• May not visually indicate the road segment that has been assigned as the structure’s address


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Special Case – Property Access


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Items of Debate

• Placement for some special cases • Multiple properties sharing the same driveway, access

road, or other primary entrance • A group of addressed structures sharing a single address

number and subaddress information is not known, provided, or assigned

• Preferred point placement method(s) • Multi-point features • Accuracy • Best Practices • When people don’t agree…

• Parking lot • Subgroup


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NENA Document Development Process


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Step Description INF STA/REQ

1 Issue submitted to NENA X X

2 Development Committee rejects or accepts and assigns issue X X

3 Workgroup develops document X X

4 OPTIONAL – Authoring Committee review O O

5 Workgroup reviews and responds to comments O O

6 All Development Committee review X X

7 Workgroup reviews and responds to comments X X

8 Public Review --- X

9 Workgroup reviews and responds to comments --- X

10 NENA Board review and final approval X X

11 Document published X X

NENA Document Development Process


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Step Description INF STA/REQ

1 Issue submitted to NENA X X

2 Development Committee rejects or accepts and assigns issue X X

3 Workgroup develops document X X

4 OPTIONAL – Authoring Committee review O O

5 Workgroup reviews and responds to comments O O

6 All Development Committee review X X

7 Workgroup reviews and responds to comments X X

8 Public Review --- X

9 Workgroup reviews and responds to comments --- X

10 NENA Board review and final approval X X

11 Document published X X

Published NENA GIS Documents

• Standard Data Formats For 9-1-1 Data Exchange & GIS Mapping (NENA 02-010)

• GIS Data Collection and Maintenance Standards (NENA 02-014)

• Information Document for GIS Database to MSAG & ALI Synchronization Process (NENA 71-501)


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NENA GIS Documents in Development

• Civic Location Data Exchange Format (CLDXF) Standard • Parses addresses into smallest components

• NG 9-1-1 GIS Data Model Standard • Identifies the GIS data layers and defines attributes

• Provisioning and Maintenance of GIS data to Emergency Call Routing Function/Location Validation Function (ECRF/LVF)

• Roles and responsibilities for providing, maintaining, and loading local GIS data into a national database

• NG 9-1-1 Data Management • Discrepancy and performance reports for errors discovered during

data provisioning


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Interested in Joining a NENA Workgroup?

• NENA membership not required, but recommended

• GIS Standards under the Core Services Committee: • Data Structures Subcommittee • NG Data Management Subcommittee • www.nena.org/?page=CoreServices

• Expectations: • Weekly 60-90 minutes calls • Must contribute to the discussion • May be removed after 3 unexcused absences • Must agree to NENA Intellectual Property Rights Policy


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Questions??


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