The RN154 is a trunk road (nationale) in France linking Val-de-Reuil (near Rouen) and Artenay (near Orléans). A substantial portion of the road has been designated part of the outer Paris ring-road (premier cas/first - inner - solution), leading to an increase in traffic volumes. Partly because of this, the road has been or is being upgraded to dual carriageway for much of its length. Upgraded sections Val-de-Reuil-La Madeleine-de-Nonancourt La Madeleine-de-Nonancourt-Dreux, (Route nationale 12) under construction Dreux bypass, under construction Dreux-Chartres, under construction Chartres bypass, projected Chartres-Artenay, projected Route Val-de-Reuil to Dreux Val-de-Reuil Louviers Pinterville Évreux Prey Chavigny-Bailleul La Madeleine-de-Nonancourt Between La Madeleine-de-Nonancourt and Dreux, the road is called Route nationale 12 Dreux to Chartres Dreux Marville-Moutiers-Brûlé Le Boullay-Mivoye Serazereux Challet Poisvilliers Chartres Chartres to Artenay Gellainville Berchères-les-Pierres Allonnes Ymonville Allaines-Mervilliers Artenay External links Work progress on the DDE website 154 Transport in Normandy