Sunny-day driving hazard can be a major issue for drivers, especially when the sun is at its brightest. GLARE, which is defined as a strong, often unpleasant light that makes it difficult to see, is one of the most common hazards associated with sunny-day driving. GLARE can be caused by the sun reflecting off of wet roads, snow, or other surfaces, and can cause drivers to become temporarily blinded, leading to dangerous driving conditions.