Route nationale 1b (Madagascar)
| Route nationale 1 bis | |
|---|---|
| Route information | |
| Length | 94 km (58 mi) |
| Major junctions | |
| From | Analavory |
| To | Tsiroanomandidy |
| Location | |
| Country | Madagascar |
| Highway system | |
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.