What should be done to prepare for an upcoming turn on a commercial vehicle?

Preparing for an upcoming turn on a commercial vehicle is crucial for safety and proper maneuvering. Signaling at least 100 feet before the turn is essential because it gives other drivers ample notice of your intentions. This practice allows other road users to adjust their actions accordingly, reducing the risk of accidents.

Adequate signaling time is particularly important for larger vehicles, which require more space to turn and may be less maneuverable than smaller vehicles. Proper signaling also plays a key role in maintaining traffic flow and ensuring that the turn can be made smoothly and safely.

Other options do not align with safe driving practices. For example, accelerating just before a turn can lead to loss of control, while waiting until the last moment to signal can confuse other drivers and increase the risk of collisions. Checking mirrors only after signaling omits the critical step of assessing the surroundings before making a turn, which is necessary for ensuring there is enough space and that other vehicles or pedestrians are aware of your plans.