Highway Engineering

171. On earth roads, the camber should preferably be

1. 1 in 20 to 1 in 24
2. 1 in 30 to 1 in 48
3. 1 in 15 to 1 in 20
4. 1 in 10 to 1 in 15

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172. On most smooth hard surfaced roads, rolling resistance to moving vehicles, ranges from

1. 5 kg to 7 kg/tonne
2. 7 kg to 9 kg/tonne
3. 9 kg to 11 kg/tonne
4. 11 kg to 13 kg/tonne

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173. On the recommendations of Indian Road Congress, the ruling gradient in plains, is

1. 1 in 15
2. 1 in 20
3. 1 in 30
4. 1 in 45

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174. On the recommendations of Nagpur Conference, the minimum width of a village road may be

1. 2.45 m
2. 2.75 m
3. 3.66 m
4. 4.90 m

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175. One-way streets are generally provided in crowded cities as, these

1. Are inexpensive means of traffic flow
2. Reduce delays to vehicles
3. Permit higher speed
4. All the above

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176. Over taking time required for a vehicle with design speed 50 km ph and overtaking acceleration 1.25 m/sec² to overtake a vehicle moving at a speed 30 km ph, is

1. 5.0 secs
2. 6.12 secs
3. 225.48 secs
4. 30 secs

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177. Parapet walls along hill roads, are provided

1. To retain the back filling
2. To prevent the hill from sliding
3. To prevent the wheels of the vehicle from coming on the retaining wall
4. None of these

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178. Passing zones are generally not provided on

1. Summit curves
2. Horizontal curves
3. Two lane highways
4. All the above

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179. Pavement is said to be flexible if it contains

1. Water bound macadam surface
2. Stabilised soil base constructed of lime cement or tar
3. Bitumen-bound stone layer of varying aggregates
4. All the above

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180. Penetration test on bitumen is used for determining its

1. Grade
2. Viscosity
3. Ductility
4. Temperature susceptibility

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