You are driving a car with a caravan in tow. What is true regarding your distance to the vehicle ahead?

With a car and caravan you need a larger safety gap than with a solo car, because your combination is longer and needs more time and distance to react and brake smoothly. A practical rule of thumb is at least “half the speedometer in meters” (e.g., 80 km/h → at least 40 m), and with a trailer it’s sensible to be even more generous.

That larger gap is also intentionally helpful for traffic flow: it gives an overtaking vehicle enough space to pull back in front of you without cutting in dangerously. So your distance can be “appropriate” precisely because it creates a safe merge space.

Important is what happens after someone merges back in: your safety distance is now to that vehicle, and you must re-establish your proper gap again. Don’t keep the old distance to the previous vehicle and don’t stay too close just because someone has moved into your gap—ease off and rebuild the safe following distance.

The idea that the gap is “too large” just because it’s many times the length of your vehicle combination is wrong. Safety distance is not based on your vehicle length; it’s based on speed, reaction time, braking distance, and stability—especially relevant when towing.