White noise reverse alarms are a type of backup alarm system used on vehicles to alert nearby pedestrians and workers that the vehicle is backing up. Unlike traditional backup alarms, which emit a loud, high-pitched tone that can be irritating and potentially harmful to human hearing, white noise reverse alarms produce a more natural, broadband sound that is less likely to cause hearing damage.

White noise reverse alarms work by emitting a sound that is similar to the sound of rushing air or running water. This sound is less directional and less irritating than traditional backup alarm sounds, making it easier for pedestrians and workers to locate the source of the sound without being overly distracted or annoyed.

In addition to being less harmful to human hearing, white noise reverse alarms are also more effective at alerting nearby pedestrians and workers to the presence of a backing vehicle. Because the sound is less directional, it can be heard from a wider area, and because it is less irritating, it is less likely to be ignored or tuned out by those who hear it.

Overall, white noise reverse alarms are a safer and more effective alternative to traditional backup alarms, and are increasingly being adopted by vehicle manufacturers and fleet operators around the world.