Nagpur road plan formula were prepared by assuming

Select the correct statement.

The sequence of four stages of survey in a highway alignment is

The shape of the camber, best suited for cement concrete pavements, is

For water bound macadam roads in localities of heavy rainfall, the recommended value of camber is

The stopping sight distance depends upon

When the path travelled along the road surface is more than the circumferential movement of the wheels due to rotation, then it results in

Coefficient of friction is less when the pavement surface is

The shoulder provided along the road edge should be

Camber in the road is provided for

Compared to a level surface, on a descending gradient the stopping sight distance is

On a single lane road with two way traffic, the minimum stopping sight distance is equal to

The desirable length of overtaking zone as per IRC recommendation is equal to

Stopping sight distance is always

Reaction time of a driver

If the stopping distance is 60 meters, then the minimum stopping sight distance for two lane, two way traffic is

The effect of grade on safe overtaking sight distance is

The ruling design speed on a National Highway in plain terrain as per IRC recommendations is

The terrain may be classified as rolling terrain if the cross slope of land is

If b is the wheel track of a vehicle and h is the height of centre of gravity above road surface, then to avoid overturning and lateral skidding on a horizontal curve, the centrifugal ratio should always be

As per IRC recommendations, the maximum limit of super elevation for mixed traffic in plain terrain is

For the design of super elevation for mixed traffic conditions, the speed is reduced by

On a horizontal curve if the pavement is kept horizontal across the alignment, then the pressure on the outer wheels will be

For a constant value of coefficient of lateral friction, the value of required super-elevation increases with

To calculate the minimum value of ruling radius of horizontal curves in plains, the design speed is given by

The absolute minimum radius of curve for safe operation for a speed of 110 kmph is

The attainment of super elevation by rotation of pavement about the inner edge of the pavement

Select the correct statement.

In case of hill roads, the extra widening is generally provided

The transition curve used in the horizontal alignment of highways as per IRC recommendations is

For design, that length of transition curve should be taken which is

The maximum design gradient for vertical profile of a road is

The percentage compensation in gradient for ruling gradient of 4% and horizontal curve of radius 760 m is

If ruling gradient is I in 20 and there is also a horizontal curve of radius 76 m, then the compensated grade should be

The camber of road should be approximately equal to

Which of the following shapes is preferred in a valley curve ?

The value of ruling gradient in plains as per IRC recommendation is

In case of summit curves, the deviation angle will be maximum when

If the design speed is V kmph and deviation angle is N radians, then the total length of a valley curve in meters is given by the expression

If an ascending gradient of 1 in 50 meets a descending gradient of 1 in 50, the length of summit curve for a stopping sight distance of 80 m will be

Highway facilities are designed for

Enoscope is used to find

For highway geometric design purposes the speed used is

Select the correct statement.

Length of a vehicle affects

The maximum width of a vehicle as recommended by IRC is

Desire lines are plotted in

Which of the following methods is preferred for collecting origin and destination data for a small area like a mass business center or a large intersection ?

The diagram which shows the approximate path of vehicles and pedestrians involved in accidents is known as

With increase in speed of the traffic stream, the minimum spacing of vehicles

Which of the following is known as design capacity ?

If the average center to center spacing of vehicles is 20 meters, then the basic capacity of a traffic lane at a speed of 50 kmph is

With increase in speed of the traffic stream, the maximum capacity of the lane

Equivalent factor of passenger car unit (PCU) for a passenger car as per IRC is

If the stopping distance and average length of a vehicle are 18 m and 6 m respectively, then the theoretical maxi¬mum capacity of a traffic lane at a speed of 10 m/sec is

Scientific planning of transportation system and mass transit facilities in cities should be based on

The diagram which shows all important physical conditions of an accident location like roadway limits, bridges, trees and all details of roadway conditions is known as

When the speed of traffic flow becomes zero,then

On a right angled road intersection with two way traffic, the total number of conflict points is

The background colour of the informatory sign board is

Which of the following is indicated by a warning sign ?

“Dead Slow” is a

The most efficient traffic signal system is

The provision of traffic signals at intersections

Select the incorrect statement.

Center line markings are used

The particular places where pedestrians are to cross the pavement are properly marked by the pavement marking known as

The entrance and exit curves of a rotary have

When two equally important roads cross roughly at right angles, the suitable shape of central island is

The maximum number of vehicles beyond which the rotary may not function efficiently is

A traffic rotary is justified where

When a number of roads are meeting at a point and only one of the roads is important, then the suitable shape of rotary is

Maximum number of vehicles can be parked with

When the width of kerb parking space and width of street are limited, generally preferred parking system is

As per IRC recommendations, the average level of illumination on important roads carrying fast traffic is

The most economical lighting layout which is suitable for narrow roads is

The direct interchange ramp involves

In soils having same values of plasticity index, if liquid limit is increased, then

Which of the following tests measures the toughness of road aggregates ?

Los Angeles testing machine is used to conduct

In CBR test the value of CBR is calculated at

If aggregate impact value is 20 to 30 percent, then it is classified as

The maximum allowable Los Angeles abrasion value for high quality surface course is

Percentage of free carbon in bitumen is

The ductility value of bitumen for suitability in road construction should not be less than

The maximum limit of water absorption for aggregate suitable for road construction is

Which of the following represents hardest grade of bitumen ?

Penetration test on bitumen is used for determining its

Bitumen of grade 80/100 means

RC-2, MC-2 and SC-2 correspond to

The recommended grade of tar for grouting purpose is

Softening point of bitumen to be used for read construction at a place where maximum temperature is 40° C should be

For rapid curing cutbacks, the oil used is

The method of design of flexible pavement as recommended by IRC is

The group index for a soil, whose liquid limit is 40 percent, plasticity index is 10 percent and percentage passing 75 micron IS sieve is 35, is

Bottom most layer of pavement is known as

Flexible pavement distribute the wheel load

The number of repetitions, which the pavement thickness designed for a given wheel load should be able to support during the life of pavement is

. Group index method of design of flexible pavement is

. Select the correct statement.

. If the group index value of subgrade is between 5 and 9, then the subgrade is treated as

. Tyre pressure influences the

. Rigidity factor for a tyre pressure greater than 7 kg/cm2 is

. The critical combination of stresses for corner region in cement concrete roads is

. Tie bars in cement concrete pavements are at

. The maximum spacing of contraction joints in rigid pavements is

. The maximum thickness of expansion joint in rigid pavements is

. The function of an expansion joint in rigid pavements is to

. The fundamental factor in the selection of pavement type is

. Most suitable material for highway embankments is

. Maximum daily traffic capacity of bituminous pavements is

. The most suitable equipment for compacting clayey soils is a

. The aggregates required for one kilometer length of water bound macadam road per meter width and for 10 mm thickness is

. The camber of shoulders in water bound macadam roads is

. The binder normally used in flexible pavement construction is

. In highway construction, rolling starts from

. For the construction of water bound macadam roads, the correct sequence of operations after spreading coarse aggregates is

. In the penetration macadam construction, the bitumen is

. When the bituminous surfacing is done on already existing black top road or over existing cement concrete road, the type of treatment to be given is

. Which of the following premix methods is used for base course ?

. Select the correct statement.

. The suitable surfacing material for a bridge deck slab is

. Which of the following is considered to be the highest quality construction in the group of black top pavements ?

. The thickness of bituminous carpet varies from

. Which of the following represents a carpet of sand-bitumen mix without coarse aggregates ?

. In highway construction on super elevated curves, the rolling shall proceed from

. The camber for hill roads in case of bituminous surfacing is adopted as

. The minimum design speed for hairpin bends in hill roads is taken as

. The drain which is provided parallel to roadway to intercept and divert the water from hill slopes is known as

. The walls which are necessary on the hill side of roadway where earth has to be retained from slipping is known as

. In hill roads the side drains arc provided