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The length of National Highways as per 3rd 20 year (Lucknow) road plan is given by
(i) Length of National Highways (NH)
= Area of the country/50
(ii) Length of State Highways (SH)
= Area of the state/25
= 62.5 x number of towns in the state - Area of the state/50
(iii) Length of the Major District Roads (MDR)
= Area of the State/12.5
= 90 x number of towns in the state
(iv) Total length of all categories of roads in a district i.e.
NH + SH + MDR + ODR + VR
= Area of District x 0.82
In 1927, Jayakar committee was set up-to examine and report on road development in India, based on which certain institutions were subsequently set up. Which of the following were the direct out come of Jayakar committee recommendations.
1. Indian Road Congress
2. Central Road Fund
4. National Highway Act
After the first World War, motor vehicle using the roads increases. Jayakar Committee was thus, formed and recommended-
Road development should be a national interest.
An extra tax should be levied on petrol from road users to create the road development fund Central Road Fund
To establish a semi-official, technical institution to pool technical knowledge, sharing of ideas to act as an advisory body Indian Road Congress
To create a national level institution to carry research, development works and constitution CRRI (Central Road Research Institute)
1. Creation of Central Road Fund
2. National Highway Act
3. Formation of Indian Road Congress
4. Creation of Highway Research Board
The correct chronological order of these events is
Creation of Central Road Fund -1929
National Highway Act -1956
Formation of Indian Road Congress - 1934
Creation of Highway Research Board - 1973
The semiofficial body set up for controlling and standardization of roads and bridges in India is
Nagpur road plan has recommended the use of road pattern type of
Select the correct statement.
A train is hauled by 2-8-2 locomotive with 22.5 tonnes load on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive?
2-8-2 means 2 boggie carriers, 8 central or driving or coupled wheels and 2 rear or trailing wheels.
Thus, number of axles
Number of driving axles = 8/4 =4
Hauling capacity = (0.25 x 4 x 22.5 = 22.5)
The load on each axle of a locomotive is 22 tonnes. If the coefficient of friction is 0.2 then the hauling capacity due to 3 pairs of driving wheels will be
Hauling capacity = 0.2 x 22 x 3 = 13.2t
A locomotive has four pairs of driving wheels carrying an axle load of 24 x 104 N. The maximum load that can be pulled if the coefficient of friction is 1/6, is
Maximum load pulled
In India, in station yards a minimum gradient of 1 in 1000 is provided for