Vehicle horn Several languages have either borrowed or transcribed the name into their lexicons. In Japanese, the word refers to car horns in general, and in verb form () refers to sounding the horn. This is also true in languages such as French (), Italian (), Dutch (), Russian (), Polish (), Spanish (), Romanian (), Czech (), Turkish (), Indonesian (), and Korean (). In countries applying the Vienna Convention on Road Traffic, usage of audible warnings is limited, and allowed only in two cases: Vehicle horn A horn is a sound-making device that can be equipped to motor vehicles, buses,
Personal alarm Personal alarm A personal alarm is a small hand-held electronic device with the functionality to emit a loud siren-like alarming sound. It is activated either by a button, or a tag that, when pulled, sets the siren off. It is used to attract attention in order to scare off an assailant. The sound emitted can also have the effect of distracting, disorienting, or surprising the assailant. The volume varies from model to model, with some models having 130 decibels. Some personal alarms are also outfitted with an LED light for normal lighting purposes or to help deter an assailant. Due