Texas DMV Written Driving Practice Test

Using a turn signal before turning or changing lanes is essential for safe driving. This practice communicates your intentions to other road users, including vehicles and pedestrians, thereby reducing the risk of collisions. By signaling in advance, you give others adequate time to react to your movement, whether it's changing lanes or making a turn at an intersection.

It's crucial to signal before you begin your maneuver, allowing sufficient time for drivers behind you to adjust their speed or position if necessary. This practice is not only a fundamental aspect of road safety but also a legal requirement in Texas and many other states. Therefore, using a turn signal serves not just to inform, but it also fosters a cooperative driving environment.

The other options do not encompass the full scope of when turn signals should be used, which is why they fall short. For instance, signaling only when changing lanes or restricting the use of signals to parking scenarios fails to account for the importance of indicating intentions in various driving contexts.