How accurate E911?

GPS World, Nov, 2007

I believe the story titled "FCC to Require Full E911 Adherence by 2012" would have been much more useful if it actually mentioned what the accuracy requirements are.

--Chris Lund

Technical Director, Honeywell Guidance and Navigation COE

Minneapolis, Minnesota

Editor's Reply:

The FCC Phase II location accuracy standard for network-based technologies is 100 meters for 67 percent of calls and 300 meters for 95 percent of the calls. For handset-based technologies, the standard is 50 meters for 67 percent of the calls and 150 meters for 95 percent of the calls.

--Janice Partyka

Contributing Editor, Utilities & Communications