The duties of  Department of Rural Roads are as follows:

1. To implement the Highway Acts exclusively relating to rural roads and other relevant law.
2. To conduct the research and development studies on the construction and maintenance of rural roads.
3. To lay down standards and specifications for rural roads and to make regular inspection to reach the required standards.
4. To provide other agencies with job-related training, technical manual and advisory service on road engineering.
5. To collaborate actively with both domestic and international road agencies on road projects.
6. To perform any other duties as stipulated by laws or delegated by the Ministry of Transport or the Cabinet