| 1 | Regulatory applicability | Confirm that the vest is intended for workers exposed to public traffic or construction-site hazards. | 23 CFR 634.3 requires workers within the rights-of-way of Federal-aid highways to wear high-visibility safety apparel that meets an accepted ANSI/ISEA 107 edition specified by the regulation. | Written compliance statement, applicable standard edition, product scope, and technical documentation. | The supplier claims that “high visibility” alone proves compliance without identifying the applicable standard. |
| 2 | ISO 20471:2013 classification | Check the declared ISO class and whether it matches the visibility risk, work zone, and required body coverage. | ISO 20471:2013 classifies garments according to minimum areas of fluorescent background material and retroreflective material. Class 3 provides the highest level of visibility among the three classes. | Valid test report or certificate identifying ISO 20471:2013, garment model, size range, and class. | A product is described as “Class 2/3” without a clear class designation or supporting test documentation. |
| 3 | Material performance | Review the fluorescent fabric, retroreflective tape, contrast materials, and performance after care. | ISO 20471 includes requirements for color, photometric performance, physical properties, and durability of high-visibility materials. | Laboratory reports covering color, retroreflection, abrasion, dimensional change, and laundering or cleaning durability where applicable. | The supplier provides only fabric photographs or a general material description. |
| 4 | Design and body coverage | Assess whether reflective bands, background material, closures, arm openings, and garment length remain visible during normal work movements. | Visibility can be reduced by blocked, covered, improperly positioned, or insufficiently continuous reflective material, even when the base fabric is fluorescent. | Technical drawings, size-specific photographs, measurement charts, and design-construction details. | The supplier supplies only a front-view image and cannot show reflective coverage from the back or side. |
| 5 | Fit, sizing, and compatibility | Check the full size range, measurement tolerances, adjustment features, and compatibility with required work clothing or personal protective equipment. | A garment that is too small, excessively loose, covered by other equipment, or difficult to fasten may reduce effective visibility and safe use. | Size chart, graded measurements, sample fitting records, and instructions for wearing the vest over site clothing. | Only one sample size is available, or the supplier cannot confirm whether the design remains compliant across sizes. |
| 6 | Traceability and quality control | Confirm that production lots, raw materials, inspection results, and corrective actions can be traced. | Reliable traceability helps verify that delivered garments match the tested design and supports investigation of defects or nonconformities. | Lot or batch identification, incoming-material inspection records, final inspection criteria, and retained samples. | Test documents do not identify the product model, production lot, material composition, or test sample. |
| 7 | Care instructions and service life | Evaluate washing limits, inspection criteria, repair restrictions, storage conditions, and replacement guidance. | Dirt, wear, fading, damaged reflective tape, and repeated laundering can reduce visibility. Garments should be removed from service when they no longer provide adequate visibility. | Care label, written maintenance instructions, inspection checklist, replacement criteria, and user training materials. | No care label, undefined service-life guidance, or instructions that conflict with the tested laundering method. |