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Aim of study: We tested the perceived quality in use of a prototype of a handling supporting device, developed through a user-centred design process intended for rear-mounted foldable rollover protective-structures (FROPSs). Area of study: The study was performed in the Province of Cuneo, which has the largest number of farms and the highest share of utilized agricultural area (UAA) in Piedmont Region, NW Italy. Material and methods: Three groups of users, novice-novice (NN), novice-expert (NE) and expert-expert (EE) were asked to raise two rear-mounted FROPSs: a traditional one and a second one equipped with a supporting device which consisted of a gas spring and a rod. A questionnaire has been used to record the perceived quality in use of both FROPSs (effort, physical discomfort, temporal demand and ease of use) and perceived usefulness and attitudes toward the adoption of the supporting device. Main results: All groups reported less physical effort, more stable postures, higher ease of use in handling the FROPS equipped with the supporting device; NN users, in particular, declared to be willing to adopt the supporting device in the future on their tractors when commercially available. Research highlights: Previous studies reported discomfort in operating the FROPS as the main cause of its improper use. A solution to improve FROPS reachability was developed and tested with users. Benefits were perceived by both novice users and expert users. Additional key words: agriculture; ergonomics; human-machine interaction; safe behaviour; foldable ROPS; user-centred design (UCD). Abbreviations used: EE (expert-expert); FROPS (foldable rollover protective structure); NASA TLX (task-load index); NE (novice-expert); NN (novice-novice); PTO (power take-off); RAG (Research Advisory Group); ROPS (rollover protective structure); UCD (user-centred design) Authors’ contributions: Conceptualization, LV, FC, EC and MMC; investigation, LV, FC, EC; data curation, LV and FC; formal analysis and original draft preparation, LV; methodology and writing review and editing, FC, EC and MMC; project administration, MMC. All authors read and agreed to the published version of the manuscript. Citation: Vigoroso, L; Caffaro, F; Cavallo, E; Micheletti Cremasco, M (2021). User-centred design to promote the effective use of rear-mounted foldable roll-over protective structures (FROPSs): prototype evaluation among novice and expert farmers. Spanish Journal of Agricultural Research, Volume 19, Issue 3, e0207. https://doi.org/10.5424/sjar/2021193-17768 Received: 13 Nov 2020. Accepted: 30 Jun 2021. Copyright © 2021 INIA. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC-by 4.0) License. Funding: The authors received no specific funding for this work, Competing interests: The authors have declared that no competing interests exist. Correspondence should be addressed to Federica Caffaro: [email protected] Spanish Journal of Agricultural Research 19 (3), e0207, 12 pages (2021) eISSN: 2171-9292 https://doi.org/10.5424/sjar/2021193-17768 Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) OPEN ACCESS RESEARCH ARTICLE