Ace the Texas CDL General Knowledge Exam 2026 – Drive Your Future to Success!

Using low beams in foggy conditions is essential for improving visibility and ensuring safety. High beams can create a glare effect when they reflect off the fog, rain, or snow, leading to reduced visibility rather than enhancing it. This is because the light is directed upward into the fog or precipitation, scattering and bouncing back into the driver’s eyes.

Conversely, low beams provide a more controlled and directed light that can illuminate the road immediately in front of the vehicle without creating excessive glare. This allows drivers to see better without causing a blinding effect.

Hazard lights are intended to alert other drivers that a vehicle may be stopped or moving slowly, but they do not improve visibility for the driver in fog. Reflectors are helpful for marking road edges or hazards but do not aid in visibility for the driver.

In summary, low beams are specifically designed to be effective in inclement weather conditions like fog, making them the appropriate choice when visibility is compromised.