North Carolina Basic Law Enforcement Training (BLET) State Practice Exam

What do two short whistle blasts signify when directing traffic?

1. Stop

2. Proceed with caution

3. Go

4. Reduce speed

The correct answer is: Go

Two short whistle blasts when directing traffic are used to signal vehicles to proceed or go. This universally understood signal helps ensure that drivers are clear on the intention to continue moving, especially in busy or high-traffic areas where clear communication is crucial for safety. In the context of traffic control, using specific whistle signals fosters a safer environment for both drivers and pedestrians. For instance, a series of other signals, whether verbal commands or whistle blasts, may indicate stopping or caution, but the specific meaning of two short blasts is to indicate that it is safe to proceed.