Some reflective vests that are commonly sold here are not visible in the dark. This was found by researchers from but in Brno. These are, for example, vests bought at the market. Although they have a label for the atheists, they are still not working. The obligation to wear reflective elements in the dark has pedestrians outside the village for more than a year.
Researchers at the Faculty of Electrical Engineering and Communication of BUT test the reflective vests directly on the field. They use a special camera with a camera to create a so-called bright map. It depicts how much the character is at night in contrast to the surroundings. “What you see here is a luminous analyzer, which is built on a digital SLR camera, which is specially adapted for this case, and the photo is analyzed by the software,” explains the head of the Jan Skoda Lighting Laboratory.
Two figurines went into the dark, 80 meters from the car. At such a distance, it must be seen that the driver has reacted to the pedestrian at speed of about 90km. The technician with the device in the car is focused, photographed and analyzed. “There is only one vest visible from the bright map, the other one cannot be seen,” Jan Skoda said.
Buying a cheap vest is a gamble with life
“A few crowns can mean the difference between life and death. The college is wearing a vest from the market and the record has not been seen, “Michal Bleak, expert of the Department of Forensic Engineering at the Institute of Forensic Engineering, said. A quality vest comes to about two hundred crowns, and drivers can buy it for example at a gas station or in a car-shop. This is believed by researchers. Reflective materials are clearly visible on the vests of night lighting at a distance of 300 meters. For those of the finest, even miles away.
Even the label with the certificate does not guarantee the quality of the vest
There is a vest around fifty crowns at the market. Most of the time he has the necessary certificates on the label. The fact that it will be visible in the dark, but it is still not guaranteed.
It is just that he has a vest for the certificate. It is enough to check the Czech Trade Inspection. If it’s actually shining in the traffic, it’s not already. The obligation to wear reflective elements in the dark has pedestrians outside the village for more than a year. The fact that she was not seen was also a life walker for her last year accident in Becalm. Dark went only in dark clothes. Overall statistics, whether people really wear reflective clothing but do not register the police.