On 15.06.2015, a
landmark Motor Vehicles Agreement (MVA) was signed between India, Nepal, Bhutan and Bangladesh in Thimpu, Bhutan.
The objective of the agreement is to regulate passenger, personnel, and cargo
vehicular traffic for seamless movement of people and
goods among the four SAARC
Countries for the benefit and integration of the
region and its economic development.
-Ministry of Road Transport and Highways
Source: Legal news India