Traffic calming techniques are extensively used as safety tools to reduce the speed of motorised vehicles along any type of paved road. The objective of this study is to evaluate the efficacy of isolated speed humps on urban roads in India and to suggest an optimised geometry of speed humps for the desired level of speed reduction. For this, five different urban road sections were identified in Delhi and video graphic data were collected at each study section. The median speed of vehicles at each grid is estimated and speed profiles were developed for each category of vehicle approaching the speed hump. The speed behaviour of the vehicles approaching a circular or parabolic shape of isolated speed hump are examined and compared. This study developed speed profile models using regression techniques for an individual vehicle and also for the combined data. The observed speed of the vehicle was considered as a response variable and the physical properties of the speed humps were considered as explanatory variables. Further, the combined linear equation was considered for determining the optimum height and entry radius of the speed hump for the desired speed by using the simplex method.

中文翻译：

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基于经验数据的减速带优化设计

交通静化技术被广泛用作安全工具，以降低机动车辆在任何类型的铺砌道路上的速度。本研究的目的是评估独立减速带在印度城市道路上的功效，并提出减速带的优化几何形状以达到所需的减速水平。为此，在德里确定了五个不同的城市路段，并在每个研究路段收集了视频图形数据。估算每个网格车辆的平均速度，并为接近减速带的每一类车辆制定速度曲线。检查和比较了接近圆形或抛物线形状的孤立减速带的车辆的速度行为。本研究使用回归技术为单个车辆和组合数据开发了速度曲线模型。观察到的车辆速度被视为响应变量，减速带的物理特性被视为解释变量。此外，考虑了组合线性方程，通过使用单纯形法来确定减速带的最佳高度和入口半径，以达到所需的速度。