A METHOD TO ESTIMATE TRAFFIC PENETRATION RATES OF COMMERCIAL FLOATING CAR DATA USING SPEED INFORMATION

IF 1.3 4区工程技术 Q3 TRANSPORTATION SCIENCE & TECHNOLOGY

Transport Pub Date : 2022-08-05 DOI:10.3846/transport.2022.17069

Oruç Altintaşi, Hediye Tuydes-Yaman, K. Tuncay

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引用次数: 0

Abstract

Floating Car Data (FCD) are being increasingly used as an alternative traffic data source due to its lower cost and high coverage area. FCD can be obtained by tracking vehicle trajectories individually or by processing multiple tracks anonymously to produce average speed information commercially. For commercial FCD, the spatio-temporal distribution of these vehicles in actual traffic, traffic Penetration Rate (PR) is the most important factor affecting the accuracy of speed estimations, despite the high number of registered vehicles feeding to an FCD provider, denoting the market PR. This study proposes a method for assessing the traffic PR of commercial FCD by evaluating its speed estimation quality compared to Ground Truth (GT) data. GT speed data were employed to generate different levels of traffic PR using Monte Carlo (MC) simulations, which resulted in the development of Quality-PR (Q-PR) relations for Mean Absolute Percentage Error (MAPE) and Root Mean Square Error (RMSE) as selected Measures of Effectiveness (MoE). Simulation-based FCD results at an urban road segment in Ankara (Turkey) showed that a quality of FCD with traffic PR of 15% or more would improve significantly. Use of the developed Q-PR relations suggested an approximately 5% traffic PR for the commercial FCD speeds at the location.

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一种利用速度信息估计商用浮动车数据交通渗透率的方法

浮动车数据(FCD)由于其成本低、覆盖面积大等优点，正越来越多地被用作交通数据的替代来源。FCD可以通过单独跟踪车辆轨迹来获得，也可以通过匿名处理多个轨迹来获得平均速度信息。对于商用FCD而言，车辆在实际交通中的时空分布，交通渗透率(traffic Penetration Rate, PR)是影响速度估计准确性的最重要因素，尽管向FCD供应商提供的注册车辆数量很多，即市场PR。本研究提出了一种通过比较Ground Truth (GT)数据的速度估计质量来评估商用FCD交通PR的方法。利用蒙特卡罗(MC)模拟，利用GT速度数据生成不同水平的交通PR，从而建立了平均绝对百分比误差(MAPE)和均方根误差(RMSE)作为选择的有效性度量(MoE)的质量PR (Q-PR)关系。在土耳其安卡拉的一个城市路段进行的基于仿真的FCD结果表明，交通PR为15%或更高的FCD质量将显著提高。使用已开发的Q-PR关系表明，该位置的商业FCD速度的流量PR约为5%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transport Engineering-Mechanical Engineering

CiteScore

3.40

自引率

5.90%

发文量

审稿时长

4 months

期刊介绍： At present, transport is one of the key branches playing a crucial role in the development of economy. Reliable and properly organized transport services are required for a professional performance of industry, construction and agriculture. The public mood and efficiency of work also largely depend on the valuable functions of a carefully chosen transport system. A steady increase in transportation is accompanied by growing demands for a higher quality of transport services and optimum efficiency of transport performance. Currently, joint efforts taken by the transport experts and governing institutions of the country are required to develop and enhance the performance of the national transport system conducting theoretical and empirical research. TRANSPORT is an international peer-reviewed journal covering main aspects of transport and providing a source of information for the engineer and the applied scientist. The journal TRANSPORT publishes articles in the fields of: transport policy; fundamentals of the transport system; technology for carrying passengers and freight using road, railway, inland waterways, sea and air transport; technology for multimodal transportation and logistics; loading technology; roads, railways; airports, ports, transport terminals; traffic safety and environment protection; design, manufacture and exploitation of motor vehicles; pipeline transport; transport energetics; fuels, lubricants and maintenance materials; teamwork of customs and transport; transport information technologies; transport economics and management; transport standards; transport educology and history, etc.