The cheaper the infrastructure and the larger the number of users, the more likely it is that such investments will be made by the private sector. It is also necessary to keep in mind that the public sector remains by far the largest source of overall infrastructure financing, accounting for 70% of the total. The private sector finances about 20%, and the remaining resources come from official development assistance. In the case of traditional infrastructure technologies, this may involve injuries caused by collapses of bridges or damage in roads.