Width of national highway | width of state highway | length of national highway
Width of national highway | width of state highway | length of national highway
Introduction - Highways
There are several kinds of roads in the world constructed by central & state governments in urban & rural areas, such as
1. National Highway (NH),
2. State highway (SH),
3. MDR (major district road),
4. ODR (other District road)
5. village road (VR).
Generally, National Highway constructed by the Central Government of consists of
- 2 Lane,
- 3 Lane,
- 4 lane a
- 6 Lane Road.
State highway, MDR, ODR & village road constructed by State Government consist of
- single lane,
- 2 Lane,
- 3 Lane
- 4 lane road.
In India, as per Indian Road Congress (IRC), width or right of way (RoW) of national highway in India is varies between 30m to 75m wide. It is about
- 30m wide for 2 lane NH,
- 45m wide for 4 lane NH,
- 60m wide for 6 lane NH
- 75m wide for 8 lane NH
which includes the width of the roadway + other necessities + future extension.
VEHICLE WIDTH
The maximum permissible width of a vehicle is 2.44m & desirable side clearance for single Lane traffic is 0.68m at both sides to allow crossing & overtaking, so this requires a minimum of lane width of 3.75m for single Lane traffic.
Road carriageway width in India as per IRC
In India, as per rules and guidelines of the Indian Road Congress (IRC), the ideal & standard width of carriageway of road or highway for single Lane traffic should be 3.75m wide for NH, SH, MDR and ODRs, for village road it is kept around 3 metres wide and for 2 lane pavement or road carriageway width shall be 7.5m wide with raised kerbs or 7m without kerbs. It is kept around 3.5m for multi-lane and 5.5m wide for intermediate carriage.
IRC specification for carriageway width
- Single lane – 3.75m wide
- 2 lane without kerb – 7m wide
- 2 lanes with raised kerb – 7.5m wide
- multi-lane – 3.5m wide
- intermediate carriage – 5.5m wide
SOME IMPORTANT QUESTIONS IN HIGHWAYS
1. The minimum width of carriageway in urban roads is ___________
a) 2.5m
b) 3.0m
c) 3.5m
d) 3.75m
2. The desirable width as per IRC for median on rural roads is ___________
a) 3m
b) 5m
c) 8m
d) 14m
3. The minimum shoulder width recommended by IRC is ___________
a) 1.0m
b) 1.5m
c) 2.0m
d) 2.5m
4. The width of formation is calculated by adding?
a) Sum of the width of pavements
b) Width of pavement+ separators
c) Width of pavement + separators + shoulders
d) Width of pavement + separator + shoulders + side drains
5. The normal width recommended in rural areas by IRC for a national highway is ___________
a) 45m
b) 29 m
c) 60 m
d) 25 m
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