In France, there are different levels, as January explained above. This is copied and pasted from Wikipedia, and seems pretty clear. Obviously they don't want you to drive after drinking, but the more serious offense carries a more severe penalty.

0.05% or 0.02% for bus drivers (€135 fine and 6 demerit points on the driver's license, which can be suspended for 3 years maximum),[11] 0.08% (aggravated, criminal offense, license suspension for 3 years, €4500 fine, and up to 2 years imprisonment)