(1) The Government of Nepal may determine and prescribe necessary criteria on the following matters in order to examine and ascertain whether a motor vehicle is capable of being plied: (a) Mechanical condition of the motor vehicle. (b) Length, breadth, height, structure and body of the motor vehicle. (c) Pollution likely to be generated from the motor vehicle. (d) Period during which the motor vehicle can be plied. (2) In issuing the road worthiness certificate after examining whether a motor vehicle is capable of being plied or issuing the test certificate, the competent authority shall make examination subject to the criteria prescribed pursuant to Sub-section (1).