Air raid sirens

I am trying to find out if there were many sirens in Bucharest and how were there used in warning the population.
Whit how long before the comming of the bombers were they used.
They were running durring the bombing too?

Thanks in advance!

In general sirens were/are used to signal an imminent danger, but in fact they can emit different signals according to the message that has to be transmitted. Most known are the air raids signals that were transmitted as soon as it was established that the town was most likely to be the target of a raid. But hopefully before that it was possible that a warning signal was transmitted, telling the population to be prepared for, well, the unexpected. And, besides these, there was also the "all clear" signal which meant that the danger was over. This was transmitted either after an air raid, meaning that the attack was over, or after a warning signal, meaning that the potential danger did not materialise.

I asked Stinghe about the sirens,and he said that starting from Baneasa,there were all over the town,mounted on the roofs.
What he didn't know was where was the "comandment",cause they all use to start in the same time.
No special facilities were built for the sirens.

Siren signals in WWII Great Britain:

Source: BBC School Radio

What do I have to do to listen to that? Please? Because it ain't working..

What do I have to do to listen to that? Please? Because it ain't working..

You must install an audio-video player called Real Player, go HERE download the soft, install it and after that try to listen to that audio file again, it should work.