Road network "RCEA" (Route Centre Europe Atlantique), the most lethal main roads in France.5 times more deadly than the national average. These main highways are very busy (about 14 000 vehicles/day for the busiest roads) with mainly heavy trucks (60% of the traffic on weekdays). Dangerous road; trucks, lorries; frequent accidents; danger; mortal, fatal, deadly. Roadsign "Less concentration = more collisions". Prevention or safety or custody or detention; road safety; truck, lorry.