Results 221 to 230 of about 3,284 (259)

Urban Road Speed Humps Setting Technology

ICTE 2015, 2015
Set the speed control humps scientifically, both from the reminder and to decelerate purpose, effective protection of urban road traffic safety. The paper describes the function of speed humps’ reducing accidents. Basing on the comprehensive analysis of domestic and foreign studies of speed humps, it further analyzes the influencing factors of ...
Yongqiang Zhang, Zhuang Hu, Aijuan Chen
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Dynamic considerations of speed control humps

Transportation Research Part B: Methodological, 1982
Abstract The objective of this study is to investigate the effects of hump parameters (cross section, dimensions, spacing, etc.) on the dynamic behaviour of the vehicle and the driver. Vehicle safety and driver comfort are most important in evaluating the effectiveness of speed control humps.
Essam Kassem, Yaagoub Al-Nassar
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Multiobjective shape optimization of speed humps

Structural and Multidisciplinary Optimization, 2008
This paper presents a new approach to the shape optimization of road speed humps. The proposed approach is based on multiobjective genetic optimization of the hump profile while taking into account the separation phenomenon, which occurs when the front tires of the vehicle momentarily lose contact with the road surface.
Hamid Ansari Ardeh, Masoud Shariatpanahi, Mansour Nikkhah Bahrami   +2 more
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Effects of speed humps on vehicle speed and pedestrian crashes in South Korea

Journal of Safety Research, 2020
Speeding is a crucial risk factor for pedestrian safety because it shortens reaction time while increasing the impact force in collisions. Various types of traffic calming measures to prevent speeding have been devised. A speed hump-a raised bump installed in the pavement-has been widely used for this purpose.To evaluate the effectiveness of speed ...
Jiho Yeo, Jooyoung Lee, Junhan Cho, Dong-Kyu Kim, Kitae Jang   +4 more
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Profile Optimization of Table Top Speed Hump for Speed Control

Volume 8: 11th International Power Transmission and Gearing Conference; 13th International Conference on Advanced Vehicle and Tire Technologies, 2011
Speed bumps are the most commonly used measure to control speeding in urban areas world wide. Specifications on profiles and dimensions are largely based on road tests. Studies into speed bumps, directed at evaluating their effectiveness in reducing accidents and their environmental impact, have brought some negative aspects concerning speed bumps to ...
Theunis R. Botha, Pieter S. Els, Petronella E. Uys, Rudolf Bester   +3 more
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Effects of Speed Bumps and Humps on Motorcycle Speed Profiles

Advanced Materials Research, 2014
In developed countries, the use of speed humps and bumps have evolved from extensive research and testing which been properly designed and standardized. On the contrary in developing countries, no systematic and scientific studies have been carried out on that environment, especially the study on the effects that the motorcyclists response to the humps
Wichuda Satiennam, Thaned Satiennam, Pornsiri Urapa, Tussawan Phacharoen   +3 more
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Humping mechanisms present in high speed welding

Science and Technology of Welding and Joining, 2006
As welding speeds continually increase owing to automation and newer processes, a common defect that occurs is humping. Humping is the periodic occurrence of beadlike protuberances. The objective of the present investigation is to review current and previous researches that were made on humping, including both experimental and theoretical studies.
E. Soderstrom, P. Mendez
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Optimal road hump for comfortable speed reduction

SPIE Proceedings, 2008
We propose a practical tool for exploring the dynamic relation between road profiles and vehicle motion in the time domain. It is symmetric in the sense that the direct (vehicle response to a given road profile) and the inverse (ideal road profile for a given response) problems are both solved by means of digital filtering. The dynamics of each vehicle
P. Y. Zhu, J. P. Hessling, D. S. Liu
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The Best Speed Limit Range for Road Hump

Applied Mechanics and Materials, 2014
Through simulating the process of vehicle running over humps in CarSim, calculating and analyzing the body vertical acceleration, the wheel load and wheel ground adhesion index for the car with different speeds that runs over road humps having different height and width, so as to obtain the effect of height and width of the hump on the deceleration ...
Song Lan, Feng Gao, Guo Yan Xu, Neng Gen Ding   +3 more
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Humping reduction methods for high speed laser welding

ICALEO 2009: 28th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, 2009
Conventional pulsed laser welding is typically done at speeds on the order of millimeters per second, which is too slow to be economically feasible for future energy applications such as laser welding bipolar plates for fuel cells. A typical fuel cell stack may have hundreds of feet of welding which must be executed with high precision and no defects ...
Scott Cornell, Kevin Hartke
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