There are bike lanes here. They are even better off than the road in some places (the road and the bike lane were built at the same time, but the road is suffering from the trucks coming from the quarry).

Normal bikers use them. But some wannabe-tour-de-france idiots in spandex with bikes that are not traffic worthy (no lights or reflectors as the law demand for roadworthyness) - they drive on the road instead of the bike lane.