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" in several languages. Prevention or safety or custody or detention; road safety; truck, lorry.