In Mexico, special preaching campaigns​—called pioneer routes—​are organized in order to reach territories that are not assigned to a congregation and, therefore, are not regularly receiving the good news of God’s Kingdom. Generally, these are remote or hard to reach territories. Help is also given to isolated congregations that have an extensive territory to cover.

In order to determine what areas of the country will be covered by the pioneer routes, the branch office of Jehovah’s Witnesses examines the needs of the territory.a Once this has been done, groups of special pioneers are assigned to cover the territory. They are provided with vehicles suitable for the rugged, unpaved roads. The vehicles also serve as literature storehouses and sleeping quarters when necessary.