[xaitv]

As someone who lives in The Netherlands I was kind of confused by this post as well. We have a monthly nationwide test of our emergency warning sirens and every so often the cell broadcast system is tested as well. I thought every/most countries did that?

[gpvos]

Nope. Some do, some don't. Actually, I haven't heard the Dutch monthly sirens recently. (Or maybe my Monday workplace is just too far from them?)

[Doxin]

They still test the sirens every month. The loudness is tuned to mostly alert people who are outside -- the expected action on hearing the siren is going inside anyways.