Question
The road length of national highway by third road plan formula,in certain district in India having its area is 15,400 km2, will be

Calculation                                        

Area=15,400 km2

Length of NH=Total Area of state in km2 / 50

=15400/50

=308km

Question

The Area of a certain district in India is 13400sqkm & there are 12 towns as per census determine the length of different categories of roads to be provided in the district by the year 2001

Calculation

Total length of road={4.74*12=56.88km or 82/100*13400=10988km}

Hence the total length is =10988km

Length of NH=13400/50 =268km.

Length of SH={13400/25=536km or 62.5*12-256 =462}

Hence length of SH = 536km

Length of MDR={ 13400/12.5=1072km or 90*12=1080km}

Hence length of MDR=1072km

Length of ODR & VR=(10988-268-536-1080)=9104km

Primary=NH=256km

Secondary=SH+MDR=536+1080=1616km

Rural/Tertiary = ODR+VR=9104km