The Driving Toward the Sun Problem is a phenomenon that occurs when drivers are driving directly into the sun, causing them to be temporarily blinded by the GLARE. The term 'GLARE' is used to describe this effect, which is a 5-letter word. GLARE can be caused by a variety of factors, including the sun's brightness, the angle of the sun, and the reflection of light off the road. It can be dangerous for drivers, as it can cause them to lose control of their vehicle or miss important signs and obstacles.