En una vía así señalizada, ¿a qué velocidad máxima le está permitido circular a un turismo que arrastra un remolque?

The signs in the picture, a direction sign for the road we are on (on the left) and an immediate exit sign (on the right), tell us that we are on a conventional road. We can tell this because the direction sign for our road is white. If it were blue, it would mean we were on a motorway. It is also important to note that immediate exit signs always have the colour of the road they lead to. The general maximum speed for cars on conventional roads is 90 kilometres per hour. As the car is towing a trailer, its maximum speed is 80 km/h.