Route départementale française D20b (38)

Route départementale D20B (38)
Localisation
Pays	France
Département	Isère (38)
Caractéristiques actuelles
Itinéraire	Roybon - Montmiral (26)
Longueur	11 km

Présentation

• La route départementale D20^B (38), ou RD20^B (38), est une route départementale de l'Isère (38), annexe de la D20.
• Elle permet de relier Roybon à Romans-sur-Isère. Cette route est prolongée par la D52 dans la Drôme (26).

Tracé

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• Isère (38) - D20^B
  • D20
  •  Col de la Madeleine (493 m) D27
  • La Bruyère

• Drôme (26) - D52