Indiana Bureau of Motor Vehicles Permit Practice Test

What is the purpose of circular traffic signs?

1. Regulatory information

2. Traveler information

3. Warning of hazards

4. Alerting of railroad crossings

The correct answer is: Alerting of railroad crossings

Circular traffic signs are specifically designed to alert drivers to the presence of railroad crossings. These signs are typically used to indicate that a driver is approaching a point where a railway intersects the roadway. The circular shape is distinct and helps in catching the attention of motorists, making them aware to slow down and be prepared to look for trains. In contrast, regulatory information signs convey rules that drivers must follow, such as speed limits. Traveler information signs provide directions or information about services and points of interest. Warning signs typically alert motorists to hazards or changes in road conditions, but they do not specifically denote railroad crossings as the circular signs do. Understanding the specific functions of traffic signs can greatly enhance road safety and compliance.