California: "Hi-Lo" Tone Approved Statewide for Evacuation Orders

[supraphonic]

"SB 909 by Senator Bill Dodd (D-Napa) authorizes the use of “hi-lo” sirens to alert the public of the need to evacuate."

Governor's office press release: https://www.gov.ca.gov/2020/09/29/i...sponse-efforts-protect-high-risk-communities/

Already being piloted in several Northern California counties, now law statewide. Helps that state law keeps requirements on siren tones so tight.

 

[supraphonic]

Already looks like Placer County is taking some liberties with the German land tone:

 

[MtnMan]

The Federal Sign & Signal Corporation anticipated this 50+ years ago, remarking in the PA-20A manual, "HI-LO: In this position, a two tone sound will be heard. This distinctive tone may be reserved or used for any special indication or situation."

 

[d119]

Too bad none of the public has been educated about it. I guess this means all of us vollies need to program that tone out, since it WAS considered a "non-siren" tone.

Edit: After reading the modified section, it is still considered a "non-siren" tone.