On 10/8/2014 00:35, Larry Sheldon wrote:

On 10/7/2014 23:44, Valdis.Kletnieks@vt.edu wrote:

...

On Tue, 07 Oct 2014 23:10:15 -0500, Larry Sheldon said:

...

The cell service is not a requirement placed upon them, I am pretty sure.

However, once having chosen to provide it, and thus create an expectation that cellular E911 is available, they're obligated to carry through on that.

Obligated by what law, regulation, rule or contract?

I lived in the area and worked in San Francisco when BART was built, and while I never rode BART regularly, I have no recall of cell service on BART or MUNI being a safety issue or advertised as such. -- The unique Characteristics of System Administrators: The fact that they are infallible; and, The fact that they learn from their mistakes. Quis custodiet ipsos custodes