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High-visibility clothing
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High-visibility clothing
High-visibility clothing, sometimes shortened to hi vis or hi viz, is any clothing worn that is highly luminescent in its natural matt property or a color that is easily discernible from any background. It is most commonly worn on the torso and arm area of the body. Health and safety regulations often require the use of high visibility clothing as it is a form of personal protective equipment. Many colors of high visibility vests are available, with yellow and orange being the most common examples. Colors other than yellow or orange may not provide adequate luminescence for conformity to standards such as ISO 20471.
As a form of personal protective equipment, high-visibility clothing is worn to increase a person's visibility and therefore prevent accidents caused by persons not being seen. As a result, it is often worn in occupations where hazardous situations are created by moving vehicles or low lighting conditions. These occupations include railway and road workers, airport workers and emergency services. Cyclists and motorcyclists may also use high-visibility clothing to increase their visibility when operating amongst motor traffic. Hunters may be required to wear designated high-visibility clothing to prevent accidental shooting.
The Hurt Report in the United States found that very few motorcyclists involved in collisions wore high-visibility clothing, and that just over half of the collisions studied, nearly two-thirds of those involving another vehicle, were due to the motorist unintentionally violating the motorcyclist's right of way. "This dominant culpability of the driver of the other vehicle... emphasizes the special need for high contrast conspicuity for the motorcycle and rider."
A New Zealand case-control study found that the population attributable risks were 33% for wearing no reflective or fluorescent clothing; one third of motorbike accidents might have been prevented by wearing high-visibility clothing. Conspicuous behaviors, such as the wearing of high-visibility clothing, the use of headlights in the daytime, and the use of a white helmet, reduced the risk of a rider facing a collision.
Traffic risks to the cyclist are similar to those faced by motorcyclists, with the main differences being that cyclist speeds are typically lower, and the cyclist wears less protective gear. In a 2009 study, most UK cyclists and almost all motorists believed that high-visibility clothing would increase cyclists' visibility. Almost all drivers agreed that cyclists need to wear reflective clothing in low lighting environments, whereas less than three-quarters of cyclists (72%) agreed, and less than half claimed that they always did so.
A Cochrane Systematic Review of research evidence for the effectiveness of visibility aids (fluorescent and retroreflective clothing and equipment) was carried out by Kwan and Mapstone in 2006. The authors found 42 studies which collectively suggested that fluorescent clothing could increase the distance at which drivers could detect and then recognise cyclists in daylight conditions. The same review found evidence that retro-reflective materials worn by cyclists at night had a similar effect on driver perceptions. At that time there were no studies published that had actually demonstrated a reduction in collision crashes for bicyclists wearing fluorescent or retroreflective clothing whilst on public roads.
A 2009 Australian study of drivers trying to see stationary cyclists on a closed circuit found that fluorescent vests (without retro-reflective stripes) were not a significant improvement on black clothing at night and that retro-reflective strips were more effective when attached to knees and ankles than on a more or less static jacket.
A 2012 British case-control study showed a non-significant increase in the odds of a crash for users of reflective conspicuity aids whilst cycling. In 2014, a further case-control study conducted in Canada reported a decrease in the odds of a collision with a motor vehicle when wearing 'light' coloured (not specifically fluorescent) clothing in daylight but an increase in the odds of a collision for cyclists using fluorescent clothing (and lights) at night. The number of conspicuity aids used was positively associated with an increase in collision crash odds but a non-significant reduction in the likelihood of hospitalisation.
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High-visibility clothing AI simulator
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High-visibility clothing
High-visibility clothing, sometimes shortened to hi vis or hi viz, is any clothing worn that is highly luminescent in its natural matt property or a color that is easily discernible from any background. It is most commonly worn on the torso and arm area of the body. Health and safety regulations often require the use of high visibility clothing as it is a form of personal protective equipment. Many colors of high visibility vests are available, with yellow and orange being the most common examples. Colors other than yellow or orange may not provide adequate luminescence for conformity to standards such as ISO 20471.
As a form of personal protective equipment, high-visibility clothing is worn to increase a person's visibility and therefore prevent accidents caused by persons not being seen. As a result, it is often worn in occupations where hazardous situations are created by moving vehicles or low lighting conditions. These occupations include railway and road workers, airport workers and emergency services. Cyclists and motorcyclists may also use high-visibility clothing to increase their visibility when operating amongst motor traffic. Hunters may be required to wear designated high-visibility clothing to prevent accidental shooting.
The Hurt Report in the United States found that very few motorcyclists involved in collisions wore high-visibility clothing, and that just over half of the collisions studied, nearly two-thirds of those involving another vehicle, were due to the motorist unintentionally violating the motorcyclist's right of way. "This dominant culpability of the driver of the other vehicle... emphasizes the special need for high contrast conspicuity for the motorcycle and rider."
A New Zealand case-control study found that the population attributable risks were 33% for wearing no reflective or fluorescent clothing; one third of motorbike accidents might have been prevented by wearing high-visibility clothing. Conspicuous behaviors, such as the wearing of high-visibility clothing, the use of headlights in the daytime, and the use of a white helmet, reduced the risk of a rider facing a collision.
Traffic risks to the cyclist are similar to those faced by motorcyclists, with the main differences being that cyclist speeds are typically lower, and the cyclist wears less protective gear. In a 2009 study, most UK cyclists and almost all motorists believed that high-visibility clothing would increase cyclists' visibility. Almost all drivers agreed that cyclists need to wear reflective clothing in low lighting environments, whereas less than three-quarters of cyclists (72%) agreed, and less than half claimed that they always did so.
A Cochrane Systematic Review of research evidence for the effectiveness of visibility aids (fluorescent and retroreflective clothing and equipment) was carried out by Kwan and Mapstone in 2006. The authors found 42 studies which collectively suggested that fluorescent clothing could increase the distance at which drivers could detect and then recognise cyclists in daylight conditions. The same review found evidence that retro-reflective materials worn by cyclists at night had a similar effect on driver perceptions. At that time there were no studies published that had actually demonstrated a reduction in collision crashes for bicyclists wearing fluorescent or retroreflective clothing whilst on public roads.
A 2009 Australian study of drivers trying to see stationary cyclists on a closed circuit found that fluorescent vests (without retro-reflective stripes) were not a significant improvement on black clothing at night and that retro-reflective strips were more effective when attached to knees and ankles than on a more or less static jacket.
A 2012 British case-control study showed a non-significant increase in the odds of a crash for users of reflective conspicuity aids whilst cycling. In 2014, a further case-control study conducted in Canada reported a decrease in the odds of a collision with a motor vehicle when wearing 'light' coloured (not specifically fluorescent) clothing in daylight but an increase in the odds of a collision for cyclists using fluorescent clothing (and lights) at night. The number of conspicuity aids used was positively associated with an increase in collision crash odds but a non-significant reduction in the likelihood of hospitalisation.
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