Which class of licence is required for trucks with no more than two axles towing a trailer with a registered gross vehicle weight that exceeds 4,540 kgs?

Answer: C — Class 3

A Class 1 licence is required for vehicles with a gross vehicle weight greater than 4,540 kgs. Since the question specifies a trailer with a registered gross vehicle weight of over 4,540 kgs, a Class 1 licence would not be sufficient. A Class 2 licence is required for trucks with three or more axles, so it is not the correct option for this question. A Class 3 licence is required for vehicles with a gross combination weight greater than 5,500 kgs, which also does not apply to this scenario. A Class 4 licence is for taxis, ambulances, and emergency vehicles, so it is also not the correct option in this case.