What is considered a fail when performing a driving maneuver?

Straddling lanes while driving forward or backing is considered a fail because it demonstrates a lack of control over the vehicle and an inability to maintain proper lane discipline. This behavior can create hazardous situations, as it increases the risk of collisions with other vehicles and can confuse other drivers on the road. Proper driving requires that a vehicle remains within its designated lane to ensure safety and predictability in traffic.

The other behaviors mentioned, such as making proper lane changes with signals, maintaining a safe speed, and yielding to pedestrians in crosswalks, are indicative of responsible driving practices. Each of these actions contributes positively to overall safety on the road, whereas straddling lanes clearly undermines that safety.