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首页> 外文期刊>Journal of Infrastructure Systems >Collecting Horizontal Curve Data: Mobile Asset Vehicles and Other Techniques
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Collecting Horizontal Curve Data: Mobile Asset Vehicles and Other Techniques

机译：收集水平曲线数据：移动资产工具和其他技术

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摘要

Mobile asset data collection vehicles can provide transportation agencies with inventories of various roadway and roadside elements containing location information, element type, and condition data. Horizontal curves are of interest to agencies because they have been shown to be hazardous roadway components and have potential for mobile data collection concurrently with other roadway elements. The cost of manually acquiring horizontal curvature data to develop an inventory can be prohibitive for many agencies, so understanding the applicability of a mobile asset data collection effort for curves is important. The objective of this work was to study the ability of multiple commercial roadway inventory vehicles and to compare them to other methods for determining the geometric characteristics of horizontal curves. The comparison is based on data from three commercial vendors of roadway asset inventory data on a 38.8-km (24.1-mi) course in central North Carolina. Among the 16 curves studied, at least one vendor was within 10% of the radius value found with the manual chord method for six of the curves and within 25% for 13 of the curves. Only three curves had a larger radius variant. For the length measurements of the 16 curves, at least one vendor was within 10% of the length from the chord method for eleven of the curves and within 25% for fifteen of the curves. Only one curve had a larger length variant. The mobile vehicle vendors provided more accurate and consistent curve length measurements than radius measurements. Agencies that consider using mobile data collection vehicles for horizontal alignments should understand the limitations of each horizontal curve estimating technique and the changes that can occur in the radius within the curve. Collaborating with vendors to define the changes in roadway alignment that constitute a curve, the associated beginning and ending of the curve, and geometric characteristics can provide agencies the most appropriate data to meet their needs.
机译：移动资产数据收集工具可以为运输机构提供各种道路和路边元素的清单，其中包含位置信息，元素类型和状况数据。水平曲线是代理商感兴趣的，因为已证明水平曲线是危险的道路组件，并且与其他道路元素同时具有移动数据收集的潜力。手动获取水平曲率数据以开发清单的成本对于许多代理商而言可能是过高的，因此了解移动资产数据收集工作对曲线的适用性非常重要。这项工作的目的是研究多种商用道路盘存车辆的能力，并将它们与确定水平曲线几何特征的其他方法进行比较。比较是基于北卡罗来纳州中部38.8公里（24.1英里）路线上三家道路资产清单数据的商业供应商的数据。在研究的16条曲线中，至少有1个供应商在使用手动弦方法找到的半径值的10％范围内有6条曲线，在25％的范围内13条曲线。只有三个曲线的半径变化较大。对于16条曲线的长度测量，对于其中的11条曲线，至少有一个供应商的距离在弦方法的长度的10％以内，而对于15条曲线的弦，则在25％的范围内。只有一条曲线的长度变化较大。与半径测量相比，移动车辆供应商提供了更加准确和一致的曲线长度测量。考虑使用移动数据采集工具进行水平对齐的代理商应了解每种水平曲线估算技术的局限性以及在曲线半径范围内可能发生的变化。与供应商合作，定义构成一条曲线的道路走线的变化，相关的曲线起点和终点以及几何特征，可以为代理商提供最合适的数据，以满足他们的需求。

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