Question: As per the IRC standards,
the minimum width (in m) of a two lane urban carriageway without a
raised kerb
is
(A) 6.0 (B)
6.5
(C) 7.0 (D)
8.0
Answer: (C) 7.0
·
The roads are grouped as Single lane (3.5 m),
intermediate lane (5.5 m), Double lane (7m with kerb or 7.5 m without kerb) and
multiple lanes (addl. 3.5 m for each lane) depending upon the width of
Carriageway. On village roads, the width may be restricted to 3 m.
Government Roads
·
NH: Main highways running through
the length and breadth of the Country connecting major ports, State Capitals,
large industrial and tourist center.
·
SH: Arterial routes of a State
linking District Headquarters and important cities within the State and
connecting them with NH or Highways of the neighbouring States.
·
MDR: Major
District Road, Important roads within a district serving areas
of production and
markets and connecting those with each other or with main highways
ODR: Other District Road, Roads serving rural areas of production and providing them with outlet to market centers, taluk headquarters, Block Development headquarters or other main roads.
markets and connecting those with each other or with main highways
ODR: Other District Road, Roads serving rural areas of production and providing them with outlet to market centers, taluk headquarters, Block Development headquarters or other main roads.
Passenger Car Unit (PCU)
Vehicle type
|
Rural Road
|
Urban
Road
|
|
Equivalency factor for PCU
|
Equivalent PCU factors percentage composition of
vehicle type in traffic stream
|
||
5%
|
10%
and above
|
||
Fast vehicle
|
|||
Motor Scooter (Two wheelers)
|
0.50
|
0.5
|
0.75
|
Passenger Car, Pickup van
|
1.00
|
1.0
|
1.0
|
Autorickshaw
|
1.00
|
1.2
|
2.0
|
Agricultural tractor, light commercial vehicle
|
1.50
|
1.4
|
3.7
|
Bus or trucks
|
3.00
|
2.2
|
5.0
|
Truck trailer, agricultural tractor – trailer
|
4.50
|
4.0
|
|
Slow moving vehicles
|
|||
Cycle
|
0.50
|
0.4
|
0.5
|
Cycle Rickshaw
|
2.00
|
0.5
|
2.0
|
Hand cart
|
3.00
|
2.0
|
3.0
|
Horse Drawn vehicle
|
4.00
|
1.5
|
2.0
|
Bullock cart
|
8.00
|
||
Recommended design service
volume of Road in Urban Area
|
||||
Sl.No.
|
Type of carriageway
|
PCUs per hour
|
||
Total design service
volumes for different categories of urban roads
|
||||
Arterial
|
Sub-arterial
|
Collector
|
||
1
|
2
lane (one way)
|
2400
|
1900
|
1400
|
2
|
2
lane (two way)
|
1500
|
1200
|
900
|
3
|
3
lane (one way)
|
3600
|
2900
|
2200
|
4
|
4
lane undivided (two way)
|
3000
|
2400
|
1800
|
5
|
4
lane divided (two way)
|
3600
|
2900
|
-
|
6
|
6
lane undivided (two way)
|
4800
|
3800
|
-
|
7
|
6
lane divided (two way)
|
5400
|
4300
|
-
|
8
|
8
lane divided (two way)
|
7200
|
--
|
-
|
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