1. The board of county highway commissioners shall post signs on each road which it has designated a minor county road, advising travelers on that road that the road receives only minimum maintenance and that the traveler should proceed with caution.
2. The county road supervisor shall inspect each sign at least once each year to ensure that it is in place and legible. The county road supervisor shall make necessary repairs to each sign or replace it when any person notifies the county road supervisor or he or she otherwise becomes aware that a sign is missing or in need of repair.