Driveable roads were not the only important development; as part of the Fifth Development Plan, Bhutan also needed an estimated 2,500 kilometres (1,600 mi) of mule tracks to connect the country's 4,500 settlements.
铺设道路还不是发展重点，作为第五个发展计划的一部分，不丹还需要大约2500公里的可供骡子行走的道路，来连接该国的4,500个定居点。