timster2
Platinum Member
IIRC there was a study about backup alarms that seemed to indicate because the sound was similar or the same from most alarms that after a while workers tended to ignore them on the work site, seems they faded into the background noise. There was an ongoing study to use different frequency sounds to get someones attention rather than the familiar beep beep. In crowded work sites with many vehicles working at the same time it becomes harder and harder to determine where the sound of a backup alarm is coming from. Manufacturers are now producing multi-frequency alarms that are easier to differentiate from background noise and give a better indication of the direction of the vehicle that is backing up.
Here is an example of a automatically varying volume alarm that senses ambient noise level and adjusts itself. Vehicle Safety Light| LED Lights - Peterson Manufacturing Company And multi frequency alarms ECCO | Warning Lights
Here is an example of a automatically varying volume alarm that senses ambient noise level and adjusts itself. Vehicle Safety Light| LED Lights - Peterson Manufacturing Company And multi frequency alarms ECCO | Warning Lights