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Spatial Interpolation-Based Localized Growth Factors Compared to Statewide, Regional-Level, and County-Level Growth Factors for Local Roads
| 题名： | Spatial Interpolation-Based Localized Growth Factors Compared to Statewide, Regional-Level, and County-Level Growth Factors for Local Roads |
| 正文语种： | eng |
| 作者： | Srinivas S. Pulugurtha;Sonu Mathew |
| 作者单位： | Dept. of Civil & Environmental Engineering Director of Infrastructure Design Environment & Sustainability (IDEAS) Center Univ. of North Carolina at Charlotte 9201 University City Blvd. Charlotte NC 28223-0001;IDEAS Center Univ. of North Carolina at Charlotte 9201 University City Blvd. Charlotte NC 28223-0001 |
| 关键词： | Local road; Annual average daily traffic (AADT); Growth factor; Kriging; Inverse distance weighting; Natural neighbor (NN) interpolation |
| 摘要： | The focus of this paper is on developing localized growth factors for estimating annual average daily traffic (AADT) of a local, functionally classified road (referred to herein as a local road). Statewide, regional-level, and county-level median and mean growth factors were computed and compared with localized growth factor estimates from spatial interpolation methods, such as Ordinary Kriging, inverse distance weighted (IDW), and natural neighbor (NN) interpolation. The use of Ordinary Kriging-based localized growth factor is recommended for a local road AADT estimation. If count-based local road AADT (c-AADT) figures for previous years are available, they, along with localized growth factors for those years, should be used to estimate the local road AADT (e-AADT) for the reporting year. The estimated AADT (e-AADT) for the base year and localized growth factors from the base year to the reporting year must be used for estimating e-AADT of a non-covered local road link for the reporting year. The c-AADT or e-AADT of the local road link can be used to compute vehicle miles traveled (VMT) for reporting purposes. The proposed methodology reduces the costs and other resources required for traffic data collection and for e-AADT accounting for spatial variations. |
| 出版年： | 2022 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | 148 |
| 期： | 9 |
| 页码： | 04022070.1-04022070.12 |
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