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The Efficiency of Yellow Light in the Automotive Repair Process Using the Paintless Dent Repair (PDR) Method.
Scientific ArticleApril 15, 2026

The Efficiency of Yellow Light in the Automotive Repair Process Using the Paintless Dent Repair (PDR) Method.

The paintless dent repair (PDR) method requires extreme visual precision to identify and correct micro-deformations in automotive bodywork. Traditionally, white lighting has been used, but professionals in the field have been migrating toward yellow light due to the ergonomic and technical benefits it provides. In light of studies on ergonomics and visual perception, this article analyzes the advantages of yellow lighting, highlighting ocular comfort, reduced fatigue, increased contrast, and greater efficiency during long shifts. The results discussed point to the need for standardizing this practice, benefiting both worker health and service quality.

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Abstract The Paintless Dent Repair (PDR) method requires extreme visual precision to identify and correct micro-deformations in automotive bodywork. Traditionally, white lighting has been used, but professionals in the field have been migrating toward yellow light due to the ergonomic and technical benefits it provides. In light of studies on ergonomics and visual perception, this article analyzes the advantages of yellow lighting, highlighting ocular comfort, reduced fatigue, increased contrast, and greater efficiency during long shifts. The results discussed point to the need for standardizing this practice, benefiting both worker health and service quality. Keywords: Paintless Dent Repair (PDR), Visual ergonomics, Yellow lighting, Eye fatigue, and Automotive repair.

Introduction Paintless Dent Repair (PDR) is a consolidated technique in the automotive sector, used for both new vehicles and classic car restorations. It is meticulous work in which the professional's vision is a determining factor for the quality of the repair. The lighting used during execution directly influences the ability to identify ripples and micro-defects in the bodywork. Traditionally, white board lamps are used. However, there is a growing adoption of yellow light among experienced professionals and apprentices, which raises the following question: which type of lighting promotes greater efficiency, visual comfort, and precision in the work? The objective of this article is to discuss, based on scientific foundations and practical reports, the benefits of yellow light as an ergonomic and technical resource in the PDR process.

Literature Review Studies in ergonomics and visual perception point out that lighting in warm tones, such as yellow, is less aggressive to the human eye and contributes to reducing eye fatigue in productive environments (BLUCHER, 2016; UNIP, 2019). Furthermore, research indicates that the strategic use of color in the interface between the environment and the worker promotes concentration, comfort, and increased productivity (UFPR, 2005). Visual ergonomics applied to industrial contexts reinforces that adequate contrast between light and shadow enhances the detection of details on reflective surfaces (SCIELO, 2021). Such results have direct application in PDR, where detailed visual inspection is decisive for the quality of the service provided.

Methodology The study was built from:

  • A bibliographic review on color ergonomics, visual perception, and lighting in industrial environments;
  • Practical observation of PDR workshops, comparing the application of white light and yellow light in different stages of repair;
  • Technical reports from professionals and apprentices collected in the workplace, considering variables such as: execution time, perceived eye fatigue, ease of identifying dents, and general satisfaction with the process.

Results and Discussion The analysis of the collected data, in line with the reviewed literature, demonstrates that:

  • Visual comfort and ocular health: Yellow light facilitates pupil dilation, reducing eye strain and preventing visual stress, especially during long shifts.
  • Precision in identifying defects: Apprentices reported greater ease in locating the "low points" of dents with yellow light due to the softer contrast compared to white light.
  • Adaptation and accessibility: Professionals sensitive to brightness or with astigmatism achieve better results when using yellow light, including the aid of appropriately tinted glasses.
  • Applied ergonomics: The use of planned lighting in workshops is aligned with ergonomic principles already applied in industrial and medical sectors, strengthening the argument for its standardization. These results confirm that the migration from white boards to yellow boards is not just a practical trend but a solution based on scientific evidence.

Conclusion The use of yellow light in the PDR process presents significant benefits for both repair quality and the professional's visual health. The ergonomics of color and lighting prove to be determining factors in the efficiency of the activity, contributing to the reduction of eye fatigue, improved contrast, and precision in the work. It is suggested that the use of yellow lighting be standardized in workshops and training in the field, alongside the performance of future quantitative studies to measure gains in productivity, quality, and ergonomics.

References