The RB12 is major

highway A highway is any public or private road or other public way on land. It is used for major roads, but also includes other public roads and public tracks. In some areas of the United States, it is used as an equivalent term to controlled-access ...

of western

Tajikistan Tajikistan (, ; tg, Тоҷикистон, Tojikiston; russian: Таджикистан, Tadzhikistan), officially the Republic of Tajikistan ( tg, Ҷумҳурии Тоҷикистон, Jumhurii Tojikiston), is a landlocked country in Centr ...

. Travelling in an east–west direction it connects the north–south M34 north of

Ayni Ayni (Quechua and Aymara also spelled ''Ayniy'' or ''Aini'') can refer to either the concept of reciprocity or mutualism among people of the Andean mountain communities or the practice of this concept. As a noun, the law of ayni states that everyt ...

with the Uzbek border west of

Panjakent , image_skyline = Pajakent Bazaar1.jpg , imagesize = , image_caption = Panjakent Bazaar , image_flag = , image_seal = , image_map = , map_caption = , pushpin_map = Tajikistan#West Asia , pushpin_relief = yes , pushpin_label_position = , pushp ...

. It is long.State program for the development of the transport complex of the Republic of Tajikistan until 2025
Tajikistan Ministry of Transport, p. 18 (in Tajik). In the former

Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...

, the road was part of the longer A377 which continued to

Samarkand fa, سمرقند , native_name_lang = , settlement_type = City , image_skyline = , image_caption = Clockwise from the top:Registan square, Shah-i-Zinda necropolis, Bibi-Khanym Mosque, view inside Shah-i-Zinda, ...

References

Roads in Tajikistan {{Asia-road-stub