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The danger behind the sun is electric cars

When conventional vehicle engines are identical to noise, vehicles running on electric power are exactly the opposite. Electric vehicles are known to have a low "noise pollution". One side has a positive impact, but on the other side, there is a potential danger. "Sunyinya", the noise of electric vehicles has avoided the potential problem of road accidents, especially for pedestrians.

To avoid problems caused by the silence of electric vehicles, the Ministry of Transport (Kemenhub) has issued a regulation on the noise level of electric vehicles. These rules are contained in the Minister of Transport's Regulation No. 33 of 2018 on Motor Vehicle Testing.

Article 23 (3) states that electric motor vehicles must comply with safety aspects, so that they must be equipped with sound with a certain level of noise.

Paragraph 5 contains more detailed provisions. In the first point, the minimum sound level is set at 50 decibels at a speed of 10 km / h. The next point is to mention the noise level as low as 60 decibels at a speed of 20 km / h. The final point is to set a minimum noise level of 47 decibels when reversing.

Specifically, paragraph 6 of the regulation prohibits electric vehicles from receiving sounds such as animals, sirens, horns and music. The authorized sound is more or less similar to the roar of a combustion engine.

"It was so quiet that it was not safe, especially for pedestrians, it did not sound, so the rules were set according to a regulation that minimizes noise," said the chief of testing of motor vehicle types Ministry of Transport, Dewanto.

The Guardian has written that the noise of an electric car while driving at a speed of 20 km / h is difficult to hear for people nearby, pedestrians, cyclists or other motorists. "The biggest risk associated with electric vehicles is driving at low speeds, as in urban areas where speed limits are low, the friction of the tires with the road surface, the sound of aerodynamics, becomes very minimal. "said a member of the Royal. Society for Accident Prevention - the organization of security observers in the UK, Kevin Clinton.

The problem of the sound of an electric car is not a problem.

The study conducted by Guide Dog - an organization that looks after the blind in England in 2015, as reported in the page The Royal National Institute of the Blind said that the possibility that electric cars crumble against pedestrians is 40% bigger than classic cars like gasoline or diesel. The reason is none other than the silence of the car that makes pedestrians unaware of the existence of a vehicle.

The University of California report "Hybrid cars are harder to hear" (2008) mentions that the existence of new electric vehicles can be identified by the human ear within a radius of 7 feet or about 2 meters.
Unlike the case of a gasoline-powered vehicle that is known to arrive at a distance of 28 feet or about 8.5 meters. It is therefore likely that an incident occurred because pedestrians were not aware of a vehicle.

The problem of silence usually arises when electric cars move at low speeds, ranging from 10 km / h to 30 km / h. Research by Rasmus Stahlfest Holck Skov and Lykke Moler Iversen of the Danish Roads Directorate entitled "Noise of Electric Vehicles" (2015) has proven this problem.

According to the results of their tests using Citro├źn Berlingo gasoline and electric cars, the Nissan Leaf and VW Golf, which emit a silent sound at idle speed up to a speed of 30 km / h. However, when the speed of an electric car exceeds 30 km / h, the noise level is relatively equivalent to that of a fuel-powered car.

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