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Search Results (3)

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Keywords = motorcycle horn

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16 pages, 4737 KB  
Article
Horn Use Patterns and Acoustic Characteristics in Congested Urban Traffic: A Case Study of Ho Chi Minh City
by Thulan Nguyen, Yuya Nishimura and Sohei Nishimura
Acoustics 2025, 7(2), 36; https://doi.org/10.3390/acoustics7020036 - 16 Jun 2025
Viewed by 824
Abstract
Motorcycle horns are a dominant source of urban noise in many Southeast Asian cities, driven by high two-wheeler density and limited public transport infrastructure. Although automobiles have been in use for over a century, regulations governing horn design and volume control remain inadequate. [...] Read more.
Motorcycle horns are a dominant source of urban noise in many Southeast Asian cities, driven by high two-wheeler density and limited public transport infrastructure. Although automobiles have been in use for over a century, regulations governing horn design and volume control remain inadequate. This study investigates horn use behavior in Vietnamese urban traffic, identifying distinct acoustic patterns categorized as “attention” and “warning” signals. Measurements conducted in an anechoic chamber reveal that these patterns can increase sound pressure levels by up to 17 dB compared to standard horn use, with notable differences in frequency components. These levels often exceed the daytime noise thresholds recommended by the World Health Organization (WHO), indicating potential risks for adverse health outcomes, such as elevated stress, hearing damage, sleep disturbance, and cardiovascular effects. The findings are contextualized within broader efforts to manage traffic noise in rapidly developing urban areas. Drawing parallels with studies on aircraft noise exposure in Japan, this study suggests that long-term exposure, rather than peak noise levels alone, plays a critical role in shaping community sensitivity. The study results support the need for updated noise regulations that address both the acoustic and perceptual dimensions of road traffic noise. Full article
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10 pages, 1970 KB  
Proceeding Paper
Design and Implementation of an Instrumented Motorcycle for a Naturalistic Driving Study in Indonesia
by Winda Halim, Erwani Merry Sartika, Jearim Jauhari Jarden and Hardianto Iridiastadi
Eng. Proc. 2025, 84(1), 16; https://doi.org/10.3390/engproc2025084016 - 28 Jan 2025
Viewed by 735
Abstract
Indonesia, a Southeast Asian country with a significant number of motorcycles, faces a high rate of motorcycle accidents, predominantly attributed to rider behavior. Various methods are available to study driver behavior, with the Naturalistic Driving Study (NDS) being one of the most advanced [...] Read more.
Indonesia, a Southeast Asian country with a significant number of motorcycles, faces a high rate of motorcycle accidents, predominantly attributed to rider behavior. Various methods are available to study driver behavior, with the Naturalistic Driving Study (NDS) being one of the most advanced approaches. This study employed a vehicle-based NDS method, utilizing an instrumented motorcycle equipped with sensors and cameras to capture detailed riding activities. These sensors recorded data such as speed, throttle position, brake and horn activation, turn signal usage, and motorcycle tilt. These data provided insights into rider behavior in response to surrounding traffic conditions. The purpose of this research was to transform an electric motorcycle into an instrumented motorcycle and designing experiments to collect relevant data. This innovative approach enabled detailed observation and analysis of motorcyclist behavior in Indonesia, contributing valuable insights for developing strategies to reduce motorcycle accidents. Full article
(This article belongs to the Proceedings of The 8th Mechanical Engineering, Science and Technology International Conference)
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17 pages, 2270 KB  
Article
Analysis of the Effects and Causes of Driver Horn Use on the Acoustic Environment at Urban Intersections in Taiwan
by Masayuki Takada, Shoki Tsunekawa, Kazuma Hashimoto, Tamaki Inada, Ki-Hong Kim, Yoshinao Oeda, Katsuya Yamauchi and Shin-ichiro Iwamiya
Appl. Sci. 2022, 12(12), 5917; https://doi.org/10.3390/app12125917 - 10 Jun 2022
Cited by 1 | Viewed by 4472
Abstract
Car horns were originally installed in vehicles for safety. However, many urban areas in several countries face noise problems related to the use of car and motorbike horns. To propose measures to suppress the use of horns, relationships between horn use and factors [...] Read more.
Car horns were originally installed in vehicles for safety. However, many urban areas in several countries face noise problems related to the use of car and motorbike horns. To propose measures to suppress the use of horns, relationships between horn use and factors including driver awareness and behavior, traffic environment, and the transportation system should be investigated. The present study therefore conducted surveys to grasp the current circumstances of horn use and traffic at urban intersections in Taiwan. The relationship between horn use and the traffic volume of standard-sized vehicles was found. According to an analysis of horn use during traffic signal cycles, in many cases, horns were honked after entering intersections to turn left. In particular, horns were honked when the driver waited more than 4 s for the car in front to start moving after the green light allowing left turns was turned on. An analysis of noise levels at intersections showed that the maximum noise level value (LAmax) could be reduced if vehicle horns were not used. Multiple regression analysis also indicated that LAmax values increased with the frequency of horn use. The equivalent continuous A-weighted sound pressure level (LAeq,10min) did not change with driver horn use, and increased with the traffic volume of motorcycles. Full article
(This article belongs to the Special Issue 5th Anniversary of Acoustics and Vibrations Section—Recent Advances in Acoustics and Vibration)
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