The length of road per 100 sq. km of area is known as density of roads.
Road transportation in India faces the following problems:
- Keeping in view the volume of traffic and passengers, the road network is inadequate.
- About half of the roads are unmetalled and this limits their usage during the rainy season.
- The National Highways are inadequate.
- The roadways are highly congested in cities and most of the bridges and culverts are old and narrow.