Utah CDL General Knowledge Practice Test

Question: 1 / 400

When is the use of high beams appropriate?

When driving in urban areas

When driving in foggy conditions

When driving in rural areas with no other traffic

The use of high beams is appropriate when driving in rural areas with no other traffic because these areas often have less ambient light and fewer streetlights. High beams provide increased visibility, which is crucial for detecting hazards, obstacles, and potential wildlife on or near the road. When there are no other vehicles around, using high beams does not pose a risk of blinding other drivers, making it safe to take advantage of the improved visibility they offer.

In contrast, using high beams in urban areas is typically not advisable, as streetlights and other vehicles provide sufficient illumination. In foggy conditions, high beams can actually reflect off the fog and reduce visibility rather than improve it. When driving behind other vehicles, using high beams can dazzle the driver ahead and create a dangerous situation, so low beams are preferred.

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When behind other vehicles

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