You are in your car towing a trailer on a road with oncoming traffic and want to turn left. What must you particularly remember when you set off again?

When turning left while towing a trailer on a road with oncoming traffic, it is crucial to remember two important points:

1. The combined length of your car and trailer is longer than a normal vehicle, so you need to allow extra space when turning and maneuvering to avoid hitting other vehicles or obstacles.

2. Your acceleration is reduced because you are towing additional weight. This means it will take longer to reach the desired speed, so you must be patient and wait for a clear gap in traffic before setting off.

The third option, warning oncoming traffic by flashing your lights, is not necessary or recommended in this situation. Following these rules helps ensure safe and smooth turns when towing a trailer on busy roads.