Kathmandu valley gonna be no Horn area

भिडियो हेर्न तलको बक्स भित्र किल्क गर्नुहोस

A horn is a sound-making device that can be equipped to motor vehicles, buses, bicycles, trains, trams (a.k.a. streetcars in North America), and other types of vehicles. The sound made usually resembles a “honk”. The vehicle operator uses the horn to warn others of the vehicle’s approach or presence, or to call attention to some hazard. Motor vehicles, ships and trains are required by law in some countries to have horns. Bicycles like trams, trolley cars and streetcars in many areas are also legally required to have an audible warning device, but not universally, and not always a horn.

This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (January 2011) (Learn how and when to remove this template message) Bicycles often have a classic bulb horn, operated by squeezing a rubber bulb attached to a metal horn. Squeezing the bulb forces air through a steel reed located in the throat of the horn, making it vibrate, producing a single note. The flaring horn matches the acoustic impedance of the reed to the open air, radiating the sound waves efficiently, making the sound louder. Other types of horns used on bicycles include battery-operated horns (sometimes even car horns on 12-volt circuits are incorporated) and small air horns powered by a small can of compressed gas.

भिडियो हेर्न तलको बक्स भित्र क्लिक गर्नुहोस