Hawaii Drivers Permit Practice Test

When should hazard warning signals (4-way flash) be used?

1. Driving through a tunnel.

2. Driving a heavy truck or bus up a hill.

3. Performing emergency vehicle maintenance on the road shoulder.

4. Both 2 and 3 above.

The correct answer is: Performing emergency vehicle maintenance on the road shoulder.

The correct choice highlights a critical understanding of when to activate hazard warning signals, which is primarily for situations that pose a risk to the driver and other road users. When performing emergency vehicle maintenance on the road shoulder, it is essential to use hazard warning signals to alert other drivers of the potential hazard. This is particularly important because it helps prevent accidents by making your vehicle visibly noticeable, indicating to others that you are not moving and that they should approach with caution. Using hazard lights in this context enhances safety, ensuring drivers maintain a safe distance and are aware of the stationary vehicle. This practice is part of being a responsible driver, as it aligns with the need for heightened awareness on the road. In contrast, using hazard warning signals while driving through a tunnel or while driving a heavy truck or bus uphill may not be appropriate or effective, as these situations do not typically present the same level of immediate danger to other vehicles or require notification of a stationary vehicle.