The location of the noise signs depends on what you are trying to achieve. The most important function of the noise sign is to remind people to keep the noise levels down - dealing with the problem before it happens. In an ideal situation the red lights never come on.

Mounting noise signs in corridors, just outside sensitive areas and close to the nurses station is a great way to remind staff and arriving visitors about the noise issues. Signs in these areas also helps to remind anybody moving equipment around.

For more detailed control, one or more signs mounted inside rooms (see below for How Many Signs) will give an even stronger message to visitors and the patients themselves. The message to the patient can be a mixture of "keep your noise down" and at the same time letting them know that you really do care about their exposure to noise while recovering.