Arkansas Commercial Driver License (CDL) Practice Test

What should you do to signal when passing during the daytime?

1. Flash lights from low to high

2. Use low beams

3. Tap horn

4. Use high beams

The correct answer is: Flash lights from low to high

When passing during the daytime, signaling appropriately is essential for safety. Flashing your lights from low to high serves to alert other drivers of your intention to change lanes or pass. This gesture is particularly effective because it captures the attention of drivers ahead and informs them that you are about to move past their vehicle. While low beams are typically used in situations with reduced visibility, such as at night or in fog, they do not convey the same urgency as flashing your lights. Tapping your horn might be effective in some situations to get the attention of a driver, but it's not universally recognized as a signal for passing. Using high beams is generally discouraged during the day because they can blind oncoming traffic and are typically reserved for nighttime driving when visibility is significantly reduced. Overall, flashing from low to high beams is the most direct and recognizable way to indicate your intention to pass during daylight conditions. This practice promotes clear communication on the road, helping to prevent misunderstandings and enhancing overall safety.