A50 autoroute

The motorway is 65 km and has a mixture of 2x2 and 2x3 lanes that run through mountainous coastal terrain along the Mediterranean.

As such, it has some relatively sharp turns and steep gradients by French motorway standards, and some sections have a reduced speed limit of 110 km/h.

The first section between Marseille and Aubagne was opened in 1962 and was until 1963 part of the A52 autoroute until it was renumbered after the surrounding motorways were constructed.

The road is tolled between Roquefort-la-Bédoule and Sanary-sur-Mer and is managed by ESCOTA and was the first section to trial Télépéage or Télébadge, an automatic toll payment system using a windscreen mounted sensor, in 1992.

Until then, the tunnel had only a two-lane carriageway running east to west, which opened in 2002.