Recommended retroreflective materials for general pedestrians
It's important to see and be seen. Wearing bright colors will increase your visibility, especially when walking in low light conditions such as at dawn or dusk, and will help drivers spot you. Fluorescent colors like orange, pink, etc. are ideal during the day, but they won't increase your visibility at night.
When walking outside at night, it is a good idea to always be aware of whether your clothes are visible to drivers. Don't be overconfident just because you're wearing white clothes. Even if you're wearing white clothes, the eyesight of elderly drivers can deteriorate significantly at night. When walking on the road at night, you need to use a flashlight to make yourself more visible to drivers.
In particular, in autumn and winter, people tend to wear clothes made of dark-colored fabrics with low luminance, which increases the risk of contact with cars.
As more people commute by bicycle, the number of collisions between bicycles and vehicles in urban areas is also increasing. Since bicycles travel faster than pedestrians, there is a concern that visibility at night may be reduced. At night, we recommend that you use a powerful LED light to illuminate the front of your bicycle, and at the same time, attach a retroreflective material to the bicycle body so that it is easy for vehicles approaching from behind to see you. 
It is also a good idea for drivers to wear reflective or retroreflective materials, which are three times more visible than white. There are a variety of walking shoes, jackets, and safety sports equipment made with retroreflective materials available on the market, so please make use of them.
Recommended retroreflective materials for work sites
Reflective clothing is generally a must-have for workers on construction sites, railways, airports, ports, etc. Retroreflective materials are a valuable safety measure in places where there is a risk of collision or contact with moving machinery or objects.
Drivers are also exposed to the risk of collisions. In particular, if a vehicle breaks down and needs to be repaired or wait on the road, there is a high risk of collision with a passing vehicle. The same risk also occurs when loading and unloading vehicles. 
Retroreflective clothing is also widely used by chemical and medical rescue teams and firefighters. It should be noted that the use of reflective clothing does not guarantee complete elimination of danger, but it optimizes visibility and significantly reduces the risk of accidents.