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However, road pavements are subjected to various defects because of construction errors, aging, environmental conditions, changing traffic load, and poor maintenance. Regular inspections are therefore recommended to ensure serviceability and minimize maintenance costs. Ground-penetrating radar (GPR) is a non-destructive testing (NDT) technique widely used to inspect the subsurface condition of road pavements. Furthermore, the integral use of NDTs has received more attention in recent years since it provides a more comprehensive and reliable assessment of the road network. Accordingly, GPR has been integrated with complementary NDTs to extend its capabilities and to detect potential pavement surface and subsurface distresses and features. In this paper, the non-destructive methods commonly combined with GPR to monitor both flexible and rigid pavements are briefly described. In addition, published work combining GPR with other NDT methods is reviewed, emphasizing the main findings and limitations of the most practical combination methods. Further, challenges, trends, and future perspectives of the reviewed combination works are highlighted, including the use of intelligent data analysis.<\/jats:p>","DOI":"10.3390\/rs14174336","type":"journal-article","created":{"date-parts":[[2022,9,2]],"date-time":"2022-09-02T00:19:01Z","timestamp":1662077941000},"page":"4336","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":71,"title":["Combined Use of GPR and Other NDTs for Road Pavement Assessment: An Overview"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8721-0905","authenticated-orcid":false,"given":"Ahmed","family":"Elseicy","sequence":"first","affiliation":[{"name":"CINTECX, GeoTECH Research Group, Universidade de Vigo, 36310 Vigo, Spain"}]},{"given":"Alex","family":"Alonso-D\u00edaz","sequence":"additional","affiliation":[{"name":"CINTECX, GeoTECH Research Group, Universidade de Vigo, 36310 Vigo, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1042-4985","authenticated-orcid":false,"given":"Mercedes","family":"Solla","sequence":"additional","affiliation":[{"name":"CINTECX, GeoTECH Research Group, Universidade de Vigo, 36310 Vigo, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3079-0897","authenticated-orcid":false,"given":"Mezgeen","family":"Rasol","sequence":"additional","affiliation":[{"name":"The Urban and Civil Engineering Testing and Modeling Laboratory (EMGCU), Department of Materials and Structures (MAST), Universit\u00e9 Gustave Eiffel, 5 Boulevard Descartes, CEDEX 2, 77454 Marne-la-Valee, France"}]},{"given":"Sonia","family":"Santos-Assun\u00e7ao","sequence":"additional","affiliation":[{"name":"Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Block Z, Phase 8, 181 Chatham Road South, Hung Hom, Kowloon, Hong Kong 999077, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"114410","DOI":"10.1016\/j.jenvman.2021.114410","article-title":"Sustainable design of pavement systems in highly urbanized context: A lifecycle assessment","volume":"305","author":"Hossain","year":"2022","journal-title":"J. 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