The optimization of speed hump design: A case study in Malaysia residential streets

Zainuddin, Nor Izzah; Diah, Jezan Md; Adnan, Muhammad Akram; Sulaiman, Norliana

doi:10.1109/chuser.2012.6504341

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…As a way to restore some mitigation to the environment, the so-called green wall has been studied as a sustainable tool in Mediterranean cities, such as of Limassol (Cyprus) [47]. A case study in Malaysia residential streets has been reported [48], while the impact of the ring road conclusion to the city of Guimaraes (Portugal) has been analyzed from the point of view of traffic flow variations and accessibilities [49].…”

Section: Related Work Relevant To the Dynamap Projectmentioning

confidence: 99%

Optimized Sensors Network and Dynamical Maps for Monitoring Traffic Noise in a Large Urban Zone

2021

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We review a Dynamap European Life project whose main scope was the design, commissioning, and actual implementation of “real-time” acoustic maps in a district of the city of Milan (District 9, or Z9, composed of about 2000 road stretches), by employing a small number of noise monitoring stations within the urban zone. Dynamap is based on the idea of finding suitable sets of roads displaying similar daily traffic noise behavior, so that one can group them together into single dynamical noise maps. The Dynamap sensor network has been built upon twenty-four monitoring stations, which have been permanently installed in appropriate locations within the pilot zone Z9, by associating four sensors to each one of the six group of roads considered. In order to decide which road stretches belong to a group, a non-acoustic parameter is used, which is obtained from a traffic flow model of the city, developed and tested over the years by the “Enviroment, Mobility and Territory Agency” of Milan (EMTA). The fundamental predictive equation of Dynamap, for the local equivalent noise level at a given site, can be built by using real-time data provided by the monitoring sensors. In addition, the corresponding contributions of six static traffic noise maps, associated with the six group of roads, are required. The static noise maps can be calculated from the Cadna noise model, based on EMTA road traffic data referred to the ‘rush-hour’ (8:00–9:00 a.m.), when the road traffic flow is maximum and the model most accurate. A further analysis of road traffic noise measurements, performed over the whole city of Milan, has provided a more accurate description of road traffic noise behavior by using a clustering approach. It is found that essentially just two mean cluster hourly noise profiles are sufficient to represent the noise profile at any site location within the zone. In order words, one can use the 24 monitoring stations data to estimate the local noise variations at a single site in real time. The different steps in the construction of the network are described in detail, and several validation tests are presented in support of the Dynamap performance, leading to an overall error of about 3 dB. The present work ends with a discussion of how to improve the design of the network further, based on the calculation of the cross-correlations between monitoring stations’ noise data.

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Section: Related Work Relevant To the Dynamap Projectmentioning

confidence: 99%

Optimized Sensors Network and Dynamical Maps for Monitoring Traffic Noise in a Large Urban Zone

2021

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“…As a result of the higher cost of sinusoidal and parabolic humps, the flattopped profile might be a better alternative. Besides, some previous studies have indicated that hump heights ranging from 0.076 m to 0.152 m are also common, and that hump lengths between 2.44 m and 3.67 m may be used (32)(33)(34).…”

Section: Discussionmentioning

confidence: 99%

Geometry Optimization of Speed Humps Based on Ride Comfort and Driving-Safety-Based Assessment

Sheykhfard

Haghighi

Zadkhori

et al. 2023

Transportation Research Record: Journal of the Transportation R

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The present study investigates the speed behaviors of drivers encountering speed humps on urban and suburban roads. The purpose is to optimize the geometric dimensions of different types of speed hump by considering ride comfort and driving safety criteria. Field observations of drivers’ behavior were conducted near 90 speed humps in eight cities in Mazandaran Province, Iran. Vehicles speed modeling was carried out using multi-layer perception and normalized radial basis functions artificial networks. The sensitivity analysis results of artificial neural network (ANN) models showed different factors associated with speed humps’ performance. While the length of entrance and exit ramps and passage width were the most influential factors in urban roads, speed before the humps’ position plays a crucial factor in suburban roads. Finally, the optimum geometry of speed humps was presented by ANN models for different types of roads.

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“…Bu tür hız kesiciler yükseltilmiş yaya geçidine boyut ve kullanılan malzeme bakımından benzemekle beraber üzerinde yaya geçidi bulunmamaktadır. Hazır tip kauçuk hız tümseklerine göre ise daha konforlu geçiş sağlamaktadır [7]- [9].…”

Section: Introductionunclassified

Analysis of vibration exposure of vehicles during passing through speed bumps

YURTBAŞ¹,

Kuşkapan²,

Çodur³

2022

Pamukkale J Eng Sci

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Trafik kazaları çok sayıda can kaybının yanı sıra ciddi maddi kayıplara da sebep olmaktadır. Bu durum toplumları hem maddi hem de manevi olarak olumsuz etkilemektedir. Meydana gelen trafik kazalarının çok büyük bir kısmı aşırı hızdan kaynaklanmaktadır. Özellikle kent içinde çok sayıda insan ve taşıt bulunması sebebiyle aşırı hız kent dışı yollara göre daha ağır sonuçlar doğurabilmektedir. Kent içerisinde hız aşımının azaltılması amacıyla uygulanan yöntemlerden birisi hız kesicilerin kullanılmasıdır. Bu hız kesiciler sayesinde taşıtların yüksek hızlara ulaşmaları engellenebilmektedir. Uygulanması planlanan hız kesiciler belirli standartlara uygun yapılmadığı takdirde hem sürücü hem de yolcu konforunu olumsuz şekilde etkilemektedir. Yapılan bu çalışmada Erzurum ilinde yer alan üçü hazır tip kauçuk tümsek, beşi hız platformu ve ikisi yükseltilmiş yaya geçidi tipinde olmak üzere toplam 10 adet hız kesicinin tasarım standartlarına uygunluğu araştırılmıştır. Hız kesicilerin üç boyutlu gerçek şekillerini belirlemek için ölçüm cihazı ile hassas ölçümler yapılmıştır. Deneyler her hız kesici için iki ve dört kişinin taşıtta olması kaydı ile 15-20-25-30 ve 35 km/sa. hızlarda yapılmıştır. İvme ölçümleri için 70x3 üç eksenli ivmeölçer kullanılmıştır. Titreşim ölçümleri sonucunda sadece bir adet hız kesicinin konfor şartlarına uygun olduğu ortaya konmuştur. Mevcut diğer hız kesicilerin tekrar gözden geçirilip tasarım standartlarına uygun olarak inşa edilmesinin hem sürücü hem de yolcu konforu adına daha faydalı olacağı belirtilmiştir.Traffic accidents cause serious financial losses as well as many deaths. This situation negatively affects societies both materially and spiritually. The vast majority of traffic accidents are caused by excessive speed. Especially due to the large number of people and vehicles in the city, excessive speed can have more severe consequences than the roads outside the city. One of the methods applied to reduce speeding in the city is the use of speed bumps. Thanks to these speed bumps, vehicles can be prevented from reaching high speeds. If the speed breakers that are planned to be implemented are not made according to certain standards, they negatively affect driver and passenger comfort. In this study, a total of 10 speed breakers, three of which are ready-made rubber bumps, five of which are speed humps and two of which are of the raised pedestrian crossing type, were investigated for compliance with the design standards. Precise measurements were made with the measuring device to determine the real three-dimensional shapes of the speed breakers. The experiments were carried out at speeds of 15-20-25-30 and 35 km/h, provided that two or four people were in the vehicle for each speed breaker. 70x3 triaxial accelerometer was used for acceleration measurements. As a result of the vibration measurements, it has been revealed that only one speed bump is suitable for comfort conditions. It was stated that it would be more beneficial for both driver and passenger comfort if other existing speed bumps wer...

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The optimization of speed hump design: A case study in Malaysia residential streets

Cited by 5 publications

References 4 publications

Optimized Sensors Network and Dynamical Maps for Monitoring Traffic Noise in a Large Urban Zone

Optimized Sensors Network and Dynamical Maps for Monitoring Traffic Noise in a Large Urban Zone

Geometry Optimization of Speed Humps Based on Ride Comfort and Driving-Safety-Based Assessment

Analysis of vibration exposure of vehicles during passing through speed bumps

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