(l) adopt common rules and regulations governing the dimensions, technical requirements, gross weight and load per axle of vehicles used in trunk roads within the Community; (m) co-ordinate activities with respect to the construction of trunk roads connecting the Partner States to common standards of design and in the maintenance of existing road networks to such standards as will enable the carriers of other Partner States to operate to and from their territories efficiently; (n) co-ordinate their activities in the maintenance, rehabilitation, upgrading and reconstruction of the trunk road networks connecting the Partner States and ensure that such road networks once rehabilitated will not be allowed to disintegrate; (o) adopt a co-ordinated approach in the implementation of trunk road projects connecting the Partner States; (p) agree on common policies and standards for the manufacture and the maintenance of road transport equipment; (q) establish common road design and construction standards for the trunk roads connecting the Partner States and promote the use, as much as possible, of local materials and resources; (r) adopt common and simplified documentation procedures for road transportation within the Community and harmonise road transit charges; (s) gradually reduce and finally eliminate non-physical barriers to road transport within the Community; (t) ensure that common carriers from other Partner States have the same opportunities and facilities as common carriers in their territories in the undertaking of transport operations within the Community; (u) ensure that the treatment of motor transport operators engaged in transport within the Community from other Partner States is not less favourable than that accorded to the operators of similar transport from their own territories; (v) make road transport efficient and cost effective by promoting competition and introducing regulatory framework to facilitate the road haulage industry operations; 64