Question

The minimum width of carriageway for a single lane as per the Indian Roads Congress (IRC) is:
1. 5.5 m
2. 3.75 m
3. 7.5 m
4. 7.0 m
5. 8.25 m

Answer 1

Correct Answer - Option 2 : 3.75 m

Explanation:

Width of Pavement or Carriageway:

• The pavement width depends upon the number of lanes and the width of single-lane required. The lane width determines on the basis of the width of the vehicle and minimum side clearance.
• The maximum permissible width of the vehicle as per IRC specification is 2.44 m.

Class of Road	Width of Carriageway
Single lane	3.75 m
Two lanes, without raised kerbs	7.0 m
Two lanes, with raised kerbs	7.5 m
Intermediate carriageway ( except on important road )	5.5 m
Multi-lane pavement	3.5 m per lane

• Intermediate carriageway is more than one lane but less than two lanes. This is only provided to allow manouvering.