What is required when entering traffic while towing a trailer?

When entering traffic while towing a trailer, it is crucial to enter in the nearest lane and remain there until it is safe to change lanes. This approach is designed to ensure both safety and smooth traffic flow. By using the nearest lane, you minimize the risk of obstructing traffic in other lanes and help other drivers anticipate your movements more easily. Remaining in that lane until it is safe to change helps in avoiding sudden lane changes that could surprise other drivers and potentially lead to accidents.

Entering traffic in the left lane immediately, waiting for a gap in traffic before entering, or stopping before entering traffic may not provide the same level of safety and can contribute to confusion and disruptions for other road users, which is why these alternatives are not the recommended practices. The correct choice emphasizes the importance of a strategic and cautious approach to merging into traffic while managing the additional challenges that come with towing a trailer.