Texas CDL General Knowledge Practice Exam

The required distance to signal before making a turn in a commercial vehicle is at least 100 feet. This distance is important because it gives other drivers and pedestrians ample time to react to the vehicle's intended maneuver. Signaling well in advance helps maintain safety on the road by ensuring that surrounding road users are aware of the commercial vehicle's upcoming actions.

Commercial vehicles are typically larger and can take longer to maneuver, so signaling earlier not only aids in communication but also allows for better traffic flow. This standard is particularly significant in urban areas where intersections can be crowded, and immediate recognition of a vehicle's intentions is crucial for safety.

In contrast, shorter distances for signaling may not provide sufficient time for others to adjust their driving, increasing the risk of accidents. In some situations, such as navigating busy intersections or merging into traffic, signaling too late can lead to dangerous situations for both the commercial vehicle and other drivers.