On the motorway, the maximum speed authorized for an HGV is 90 km/h.
Thanks to installations carried out, in particular the widening from 2 to 3 lanes per direction, overtaking is authorized on A63 motorway of the Landes. It is a real service for professionals, in that while travelling up north, overtaking is forbidden in the south of Bordeaux like in north (on the N10).
By respecting the speed limits, you reduce pollution as you release less harmful gases into the atmosphere. You save fuel and you gain safety.