Amirkabir University of Technology AUT Journal of Civil Engineering 2588-2899 1 2 2017 12 01 Validation of Smartphone-Based Pavement Roughness Measures 135 144 2728 10.22060/ajce.2017.13105.5328 EN S. Firoozi Yeganeh School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran A. Mahmoudzadeh Zachry Department of Civil Engineering, Texas A&M University, Texas, USA M. A. Azizpour Manchester Business School, Manchester, United Kingdom A. Golroo Department of Civil and Environment Engineering, Amirkabir University of Technology, Tehran, Iran Journal Article 2017 07 04 Smartphones are equipped with sensors such as accelerometers, gyroscope and GPS in<br />one cost-effective device with an acceptable level of accuracy. There have been some research studies<br />carried out in terms of using smartphones to measure the pavement roughness. However, a little attention<br />has been paid to investigate the validity of the measured pavement roughness by smartphones via other<br />subjective methods such as the user opinion. This paper aims at calculating the pavement roughness<br />data with a smartphone using its embedded sensors and investigating its correlation with a user opinion<br />about the ride quality. In addition, the applicability of using smartphones to assess the pavement surface<br />distresses is examined. Furthermore, to validate the smartphone sensor outputs objectively, the Road<br />Surface Profiler is applied. Finally, a good roughness model is developed which demonstrates an<br />acceptable level of correlation between the pavement roughness measured by smartphones and the ride<br />quality rated by users. https://ajce.aut.ac.ir/article_2728_5e751896e527c862bf67251a474b3819.pdf