Vehicles may partially or fully cross over multiple lanes under certain circumstances. Which of the following is NOT a condition that allows this?

When considering the circumstances in which vehicles may cross over multiple lanes, it's important to understand the specific requirements and restrictions associated with each activity.

Making a left turn typically does not allow a vehicle to cross multiple lanes freely without adhering to specific traffic signals and regulations. Left turns usually require a vehicle to first signal its intent, wait for a safe gap in oncoming traffic, and turn from its designated lane. This means vehicles must remain in their lane until the turn is initiated, making it a unique situation compared to merging or passing.

In contrast, traveling on multi-lane roadways, merging, and passing other vehicles often allow for lane changes or crossing multiple lanes under specific conditions, such as signaling and ensuring safety. These actions are generally more permissible within traffic regulations when done carefully and legally. Thus, the act of making a left turn stands out as a condition where partial or full lane crossing is not permitted in the same way that the other options are.