Georgia Commercial Driver License Practice Test

In a dual air brake system, what is true about the air tanks?

1. They share one large air tank

2. Each system has separate air tanks, hoses, and lines

3. They function only as backups

4. They automatically connect during operation

The correct answer is: Each system has separate air tanks, hoses, and lines

In a dual air brake system, each system operates independently with separate air tanks, hoses, and lines. This design is crucial for safety and reliability. By having separate components, if one portion of the system fails, the other can still function effectively, allowing the vehicle to stop safely. This redundancy is particularly important for large commercial vehicles where braking capability is essential for safe operation. The existence of individual air tanks means that pressure can be maintained in both systems separately, enhancing overall performance. This configuration allows for more efficient power distribution to the brakes and helps in maintaining control over the vehicle, especially in emergency situations. Hence, the accurate understanding of the dual air brake system underscores its significance in ensuring that a commercial vehicle remains operational even if one air system experiences issues.