The use of High Modulus Asphalt Concrete (HMAC) for base and subbase has steadily increased for the last fifteen years. Several technologies are suitable: selection of very hard bitumen, addition of asphaltite, addition of polyolefins. Rich or lean mixes can be designed. Richer mixes are easier to compact and less sensitive to water. The resistance to rutting and the stiffness moduli are similar, irrespective of the richness. The long term in-place behaviour can be rated as satiafactory. A new type of HMAC has been designed to obtain high fatigue resistance. It contains a high amount of binder, which is a composite of very hard bitumen and polyolefin. The first trial sections are being monitored. HMAC for binder and wearing courses began to be used recently. They are designed to reach not only high stiffness and excellent rutting resistance, but also sufficient surface macrotexture. The observation of the first sections laid shows no rutting under extremely heavy traffic and an overall satisfactory performance to date.