These Regulations further amend the Public Service Vehicles (Conditions of Fitness, Equipment, Use and Certification) Regulations 1981 (“the principal Regulations”) and take account of the Road Vehicles (Construction and Use) Regulations 1986 (“the Construction and Use Regulations”). Minibuses which are required to comply with, or are exempted from, regulations 41 to 43 of the Construction and Use Regulations (which relate to construction, fire extinguishing apparatus and first aid equipment), or which comply with those regulations although not required to do so, are exempted from specified provisions of the principal Regulations relating to conditions as to fitness (for the issue of a certificate of initial fitness), fire extinguishing apparatus, first aid equipment, and use requirements (regulation 4).