Route nationale 1b (RN 1bis) is a secondary highway in Madagascar of 94 km, running from Analavory to Tsiroanomandidy. It crosses the region of Bongolava and Itasy.
Selected locations on route (east to west) Analavory - (intersection with RN 1 from Antananarivo) Ankadinondry Sakay (Babetville) Tsinjoarivo Tsiroanomandidy - (intersection with RN 1)
See also List of roads in Madagascar Transport in Madagascar
References