Which of the following districts has least road density in the state?

The correct answer is Lahaul and Spiti.

Road density is the number of kilometers of road per 100 square kilometers of land area. Lahaul and Spiti has the least road density in Himachal Pradesh, with only 10.4 kilometers of road per 100 square kilometers. This is because the district is located in the Himalayas and is very mountainous, making it difficult to build roads.

Kullu has a road density of 12.3 kilometers per 100 square kilometers. Chamba has a road density of 13.2 kilometers per 100 square kilometers. Shimla has a road density of 14.1 kilometers per 100 square kilometers.

The following are some of the factors that affect road density:

• The topography of the area. Areas with mountains and hills have lower road density than areas with flat land.
• The population density of the area. Areas with more people have higher road density than areas with fewer people.
• The economic development of the area. Areas with more economic activity have higher road density than areas with less economic activity.
• The government’s policy on road construction. Some governments invest more in road construction than others.