If you see a yellow placard with a picture of a double trailer on the back of a vehicle, it may be up to what length?
Answer: D — 40 metres
The correct length for a vehicle with a double trailer is typically around 40 meters. Options A, B, and C are incorrect because they are shorter than the correct length. While it may vary by location and regulations, the general rule is that a vehicle with a double trailer should not exceed 40 meters in length. It is important to be aware of this when traveling on the road to ensure safe and legal driving practices.