# Wireless E911 Location Accuracy Requirements
> **Federal Communications Commission** · Final rule. · Published 2020-01-16 · Effective 2020-03-16 · 85 FR 2660
## Document
- **Document number:** 2019-28483
- **Category:** other
- **Federal Register citation:** 85 FR 2660
- **CFR reference:** 47 CFR 9
- **Publication date:** 2020-01-16
- **Effective date:** 2020-03-16
- **FCC docket:** PS Docket No. 07-114
## Abstract

In this document, the Federal Communications Commission (the FCC or Commission) adopts a z-axis (vertical) location accuracy metric of plus or minus 3 meters for 80 percent of indoor wireless E911 calls for z-axis capable handsets. The Commission also requires nationwide commercial mobile radio service (CMRS) providers to deploy dispatchable location or z-axis technology that meets this metric in the top 25 markets by April 3, 2021 and in the top 50 markets by April 3, 2023. The Commission also extends privacy protections to z-axis data conveyed with 911 calls.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/01/16/2019-28483/wireless-e911-location-accuracy-requirements)
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