Clothing like vests, bibs, and coveralls, known as HVSA (high-visibility safety apparel), can help workers be better seen (visibility). In low- and no-light situations, high-visibility clothing (Hi Vis Vest ) is commonly worn to make workers’ presence known to other drivers and operators of motor vehicles. It is also possible to use high-visibility headgear to boost a person’s visibility in situations where their entire body might be concealed (e.g., leaves/trees, road barriers, building materials, etc.).
Low light and poor visibility necessitate high-visibility safety clothing (Hi Vis Vest), especially if you’re working near moving vehicles. The drivers of those vehicles can see you from a greater distance when wearing high-visibility clothing, which promotes your safety on the job. Large, contrasted, bright, or moving objects appeal to the human eye. The contrast between the worker’s attire and the work surroundings enhances their visibility.
The CSA Standard recommends that each job site conduct a hazard assessment to identify known or potential dangers that workers may encounter while carrying out their duties. The results of this assessment are used to establish the level of risk employees face from being struck by moving vehicles and the working circumstances.
It is necessary to observe the working environment and the supporting personnel (e.g., is the visual area behind the workers rural, simple, complex, highway, urban, filled with equipment, cluttered)—duration of exposure to various traffic risks, such as speeding vehicles.
Changes in the weather impact natural light and lighting conditions (e.g., fog, sunlight, rain, overcast sky, or snow). Drivers’ ability to stop quickly, the volume of traffic, vehicle size and speed, and surface conditions all impact warning distances and timeframes.
The current system of regulation (e.g., administrative control such as training and engineering controls such as barricades). Workplace dangers should be kept in mind at all times. Mobile equipment and vehicle operators’ lines of sight, particularly when vehicles are driven backward.
Wearing clothes that are bright and bold in colour will help you stand out more in a crowd. Visibility is improved when the entire body is covered (from every angle). This refers to complete body coverage from 360 degrees.
The increased visibility can be accomplished by employing strips of colours that contrast (have a visible colour difference) with the material that serves as the background. Stripes on the arms and legs of the wearer can also serve as visual indicators of how they are moving.
Although background material that is brightly coloured or fluorescent can improve visibility, this type of material does not have the potential to reflect light to the person wearing it.
Retroreflective capability (the ability of a material to return light to its source), background colour and luminosity, and how much of a person’s body should be covered by high-visibility components are all addressed in the CSA Standard Z96-15, High-Visibility Safety Apparel. Clothing that must protect against electrical flash and flames has additional criteria. CSA classes differ from ANSI/ISEA 107 because they mandate body coverage rather than minimum areas, unlike those in ANSI/ISEA 107.
CSA categorises clothes based on the amount of body coverage they give. Minimum body coverage areas for each class are determined, and each type is covered following these minimum coverage areas.
Class 1- As far as coverage and visibility are concerned, Class 1 provides the lowest recognised range.
Class 2- Providing moderate body coverage and superior visibility, class 2 provides an average amount of body coverage.
Class 3- Under poor lighting conditions and long distances, Class 3 offers excellent body coverage and visibility.