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open-access-imgOpen AccessPerformance Evaluation of Traffic Speed Deflectometer Based on Virtual Standard Test Road
Yingchao Luo,
Xiaobing Li,
Genqiang Jing,
Hongbo Guo,
Qihao Yin,
Yueying Zhang
Publication year2022
Publication title
ieee access
Resource typeMagazines
It is challenging to find actual standard test roads (ASTRs) to evaluate the measuring performance of the Traffic Speed Deflectometer (TSD), leading to misjudgment of its evaluation results. To address this issue, a method to construct virtual standard test roads (VSTRs) using in-service roads is proposed. Firstly, the principle of TSD based on the Laser-Doppler effect to measure pavement deflection is introduced, and the shortcomings of traditional evaluation methods are reviewed and summarized. Secondly, an adaptive construction method for VSTRs is proposed based on the K-means clustering algorithm. It layers the Falling Weight Deflectometer (FWD) measurements on in-service roads and reconstructs them as virtual roads with stable deflections but different ranges. Thirdly, two new indexes, the coefficient of variation CV k and the influence coefficient of speed ICS k , are proposed to replace the traditional indexes, such as repeatability and correlation coefficient. Finally, the feasibility of evaluating TSD performance based on VSTRs and the new indexes is verified by experiments. Results show that the newly constructed VSTRs solve the problem that the ASTRs are challenging to obtain, reducing the experimental requirements for evaluating TSD, and the new indexes achieve an efficient and scientific evaluation of TSD.
Subject(s)aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation
Keyword(s)Road traffic, Measurement by laser beam, Traffic control, Instruments, Velocity measurement, Standards, Current measurement, Traffic Speed Deflectometer (TSD), deflection, virtual standard test road (VSTR), adaptive construction, performance evaluation
SCImago Journal Rank0.587

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