After taking a look at a public forum where the issue of using emergency beeps on trucks was discussed, we can see that there is some disagreement about it. Knapp produces another alternative to emergency horns: “Smart Strobe” technology, which automatically increases brightness during the day and decreases at night. Graham observes that at a construction site in Waikiki, “these horns are on every vehicle, from excavators to bulldozers, vehicles with no visibility restrictions. Beep, beep, beep! As these machines come and go, these stupid beeps disappear! And they come and go all day. Beep, beep, beep! Donahue notices the illogic of this incessant noise: “What makes them think we don`t know that a big truck is going to come back on us? Why do we need these disgusting beeps to tell us what we already know? Tonal alarms were the original solution to reduce reverse accidents, but emitted a single piercing tone that disturbed nearby communities and led to a host of other problems. Those working near a tonal alarm were often desensitized to the sound because it could be heard outside the danger zone. With such shrill noise in an urban environment, the sound bounces off the walls, making vulnerable road users think the sound is coming from the opposite direction. These are all problems that needed to be solved. In addition, many in this field are unaware of research that criticizes conventional alarms. Engineer Kerry Cone, former chair of the Society of Automotive Engineers` noise level technical committee, is skeptical of broadband alarms because he says people are “printed” on conventional beeps, and he doubts they would respond so easily to a signal he says is more like air brakes. “They need to understand that we are dealing with human security,” he says. He wasn`t familiar with Larocche`s research, but he says, “We`re constantly exploring new concepts.” The volume of sound is measured in units called “decibels,” the measure of everything we hear, including the volume of emergency beeps.
But why do we use decibels as a unit of measurement? How important are decibels for human interpretation of sound? And how does sound make the world safer? We try to answer some of these questions in the following article. Today, Laroche says variations in loudness and their lack of linear correspondence with the distance and direction of the truck`s speakers transmitting the sound make it difficult for a human to determine the origin of the signal. In addition, backup beeps typically emit a frequency of around 1,000 Hz, but the frequencies people prefer to use to locate sound are above 1,600 Hz and below 800 Hz, says Judy Edworthy, professor of applied psychology at the University of Plymouth, UK. The New York State Department of Health concluded, after investigating an industrial accident, that emergency audible alarms were completely ineffective: “Often, people working near emergency horns have become accustomed to their sound and become desensitized to their use as warning signs. Ray Graham commented that his dreams of peace and quiet in Waikiki were shattered by the noise of “city buses, tour buses, vans, motorcycles, fireworks, sirens and early morning drunks.” Beep, beep, beep! For years, this has been Waikiki`s sleep deprivation. But the last nasty noisemaker that sounds for Waikiki is the backup beep. Beep, beep, beep! They are everywhere, and they are worse than the invasion of Coqui frogs on the Big Island. Brains do not adapt to the repetitive and persistent sound of backup beeps, but have evolved to process natural sounds that dissolve. [clarification needed] Sound is perceived as irritating or painful, which impairs concentration.  [best source needed] After all, perception is everything when it comes to alarm sounds. The researchers found that students working on a cognitive task responded to alarms of varying reliability (reliability of 25%, 50%, and 75%, respectively) at a rate roughly equal to the reliability of the alarms.5 That is, in the case of alarms that accurately indicated an actual emergency only 25% of the time, the majority of students responded only 25% of the time. Another study suggests that emergency horns may be ineffective alerts for very young children.12 In this study, researchers asked 33 preschoolers to walk behind a stationary vehicle twice.
The second time, the reversing alarm was activated. Although half of the children hesitated or looked in the direction of the beeping vehicle, none of them responded with evasive behavior. The authors suspected that all the children would have been injured if it had been a real rescue situation. A reversing beep, also known as a reversing alarm or vehicle motion alarm, is a device designed to warn passers-by of a vehicle in reverse. Some models produce pure beeps at around 1000 Hz and 97-112 decibels.  Unfortunately, in California, the situation with emergency beeps is even worse due to California Department of Industrial Relations Regulation 1592(a). This regulation requires that the reversing alarm be audible at 200 feet in all directions on most trucks transporting construction materials. If they are audible 200 feet in front of a truck, how far away can the alarms be heard? In quiet times and in certain weather conditions, these reversing alarms are audible more than twice as far. Cal-OSHA`s new regulation on reversing alarms is a recipe for increasingly unnecessary and excessive noise.
Technologies that can mitigate the problems associated with backup beeps have been around for about two decades. Nevertheless, the conventional monotonous reversing alarm still dominates roads and construction sites. Okay, enough legal hocus-pocus. How does this affect those of us who drive a truck every day? Well, that means several things. First, OSHA requirements were introduced to ensure your vehicle is safe, not only for yourself, but also for those around you. As mentioned earlier, if you can`t see behind you in reverse, it`s imperative that you have a spare beep on your truck or an employee to guide you safely to your destination. However, this is not the end of the regulations; If your beep isn`t loud enough for everyone nearby to hear through other ambient sounds, you`re at risk. OSHA doesn`t have the ability to pre-approve certain products or horns or consider them “safe” because they really don`t know what environment you`re going to be working in or how aware your environment is of the fact that you can`t see behind your truck. Play it safe, be safe and common sense, and make sure you`re absolutely sure your surroundings are aware that you`re moving before it`s too late. Matsusaburo Yamaguchi of the Yamaguchi Electric Company, Japan, invented the backup beep, which was first produced in 1963 as the BA1 model.
 Another alternative is the broadband beep, a device that has the same cadence as the traditional beep but emits “white noise, noise,” says Thalheimer, who has no financial interest or affiliation with the manufacturer Brigade Electronics.