Delaware Driver Education State Practice Test

Which type of road sign is used to indicate caution or warning?

1. Blue signs

2. Yellow signs

3. Red signs

4. Green signs

The correct answer is: Yellow signs

The use of yellow signs is specifically designed to indicate caution or warning. These signs are prominently displayed to alert drivers to potential hazards or changes in road conditions ahead. Yellow is a color that naturally attracts attention, which is why it is effectively used in warning signs to ensure that drivers are aware of the need to slow down or be vigilant for any dangers. For instance, yellow signs can warn drivers about sharp turns, pedestrian crossings, or road work, prompting them to proceed with caution. This helps enhance safety on the roads, as drivers can prepare for any potential risks they may encounter. In contrast, blue signs typically provide information related to services, red signs indicate prohibitive measures (like stop signs), and green signs generally convey directional information or distances to destinations. This contextual understanding of sign colors reinforces the importance of recognizing and responding appropriately to warning signs while driving.