The Marius network of urban motorways near Marseille

The Marius network of urban motorways near Marseille 

This 75 km long network (by direction) consists of the urban parts of motorways A7, A50, A51 and A55 (in red on the figure) around Marseille. The sections have either two lanes per direction (the lane closed to the hard shoulder, the so-called slow lane and the median lane) or three lanes (with a middle lane) 104 traffic stations per direction (one station every 750 meters) are available on the main carriageway and on the ramps. In total, 1.5 billion vehicle kilometers were traveled between June 2009 and May 2010, 5.3% vehicles travel during rain and 15% during nighttime, which is defined between 8 pm and 6 am. 

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