What do you have to be aware of in this situation?

Your answer is correct. The key points here are:

1. The signs indicate that in 200 meters, the left-hand lane is going to narrow. This means you need to be cautious and prepare for reduced lane width ahead.

2. Since your vehicle, including exterior mirrors, is wider than the width specified in the vehicle documents, you must be especially careful in this narrowing zone to avoid collisions.

The third choice, stating the lane narrows for 200 meters, is not shown or indicated by these signs. The signs only warn about the narrowing starting in 200 meters, not the length of the narrowing.

Understanding these signs helps you anticipate road changes and adjust your position and speed accordingly, ensuring safety for you and other road users.