Distributor roads in Oman

Distributor 'roads' in Oman are the fourth category of road in the Omani route numbering system and are designated with route numbers beginning with "D".
The distributor road system was established on December 18, 2019 by the Ministry of Transport, through the Road Numbering and Classification Guide. The guide outlined two hundred and twenty-three distributor roads detailing their official classification, names, start and end point and distances.

Definition

According to the 2017 Road Design Guide, distributor roads are required to meet the following standards:

Accommodate low-speed travel.
Links areas that generate high traffic volumes such as urban areas and major villages.
Service roads connected to higher-rated roads.