By Chaturanga Samarawickrama  

Tooting vehicle horns for extended durations such as the present popular rhythm of ‘Kaputu kaak kaak kaak’ may cause vehicles to catch fire, former engineer at IBM World Trade Corporation Moorthi Dewasurendra said.  

While explaining the technical issue, he told the Daily Mirror that using horns for extended periods generates heat in the wiring and may create wire shortage.  
Accordingly, vehicles generally draw about 5–15 amps for tooting while pressing the horn for a long time.   

He said vehicle horns are generally designed to be activated for only seconds. The practice of continuously using the horn affects the wiring connecting the horns and relays used to supply power through time-delayed capabilities.  

“Making continuous horn sounds, such as the ‘kaputu kaak kaak kaak’, causing disturbance to the public is noise pollution.” he said.  

The most repairable units in buses are the components attached to the horn system. They used to have musical horns that continuously tooted, Dewasurendra added.  

• Using the horn for extended periods results in overheating of wiring and relays