National Highways in India: Understanding the System

The question asks us to identify the statement that is NOT correct regarding National Highways (NH) in India. National Highways form the backbone of India's road network, and their numbering follows a specific system established by the Ministry of Road Transport and Highways.

Analyzing Highway Numbering and Route Statements

Let's examine each statement to determine its accuracy based on the National Highway numbering convention:

• Statement 1: "The Secondary Routes of NH are numbered in 3 digits, with 2 digits as the same as that of the Primary Route Number."

  This statement is correct. Secondary routes, which are feeder routes connecting to primary national highways, are assigned three-digit numbers. The first digit typically indicates the category (e.g., '2' for secondary routes), and the subsequent two digits correspond to the number of the primary national highway they are linked to.

• Statement 2: "National Highway (NH) 44 is the longest national highway in India."

  This statement is correct. NH 44 is indeed the longest national highway in India, spanning approximately 3,747 kilometers. It runs from Srinagar in the north to Kanyakumari in the south, passing through multiple states.

• Statement 3: "The NHs predominantly along the North South direction and along the East-West direction are considered as Primary Routes."

  This statement is correct. The core network of national highways, often referred to as primary routes, includes those that primarily run along the North-South and East-West corridors of the country.

• Statement 4: "The Primary Routes of NH along the North-South direction is numbered in increasing order from east to west direction as odd numbers in 2 digits."

  This statement is NOT correct. According to the numbering convention:

  • Primary routes running North-South are assigned even numbers.
  • The numbering for North-South routes increases from West to East.
  • Primary routes running East-West are assigned odd numbers.
  • The numbering for East-West routes increases from South to North.

  Therefore, the statement incorrectly claims that North-South routes use odd numbers and increase from East to West. They use even numbers and increase from West to East.

Conclusion on Incorrect Highway Statement

Based on the analysis of the National Highway numbering system, the statement that is NOT correct is the fourth one, concerning the numbering of primary routes along the North-South direction.