The document outlines the practical components of two semesters focused on testing and certification of vehicles and components. Semester III Practical I lists 8 tests conducted on vehicles to check compliance with vehicle regulations, including bus body code, braking, steering, and noise tests. Semester III Practical II lists 20 component tests, such as testing tires, wheel rims, bearings, batteries, springs, lights, jacks, seals, filters, and more. The semester aims to cover all aspects of testing and certifying vehicles and their parts.