Regarding abnormally reduced speed, at what minimum speed, unless there is justified cause, must a pick-up drive on a dual carriageway?

On a dual carriageway, a pick-up must drive at a minimum speed of 60 km/h, unless there is a justified cause (such as adverse weather conditions or mechanical problems). Driving below this speed without justified reason is considered abnormally reduced speed and constitutes an infraction. This regulation seeks to maintain traffic flow and avoid risk situations on high-capacity roads.