"We urge drivers to check their sunglasses, especially if they are normally used for extremely bright conditions, such as high-altitude mountain environments. "These will be unsafe for driving, could impair your vision, and even lead to a fine and penalty points." Sunglasses that reduce a driver’s ability to spot hazards may also be considered a factor in careless or dangerous driving. Category one sunglasses are intended for low sunlight conditions and offer only minimal glare protection, but remain legal for daytime driving. Drivers are advised to check the category rating found on the label of the packaging of their sunglasses before using them while driving.