civil engineering mcq

1. Transportation Engineering – MCQ’s
Q.1 A parabolic vertical crest curve connects two road segments with
grades +1.0% and -2.0% if a 200m. stopping sight distance is needed
for a driver at a height of 1.2m to avoid an obstacle of height 0.15m.,
then the minimum curve length should be .(round off to the
nearest integer)
(a) 241
(b) 365
(c) 115 (GATE 2022, SET-2)
(d) 273 Answer –
Given that, n1 = +1% and n2 = –2%
n = n1 – n2 = 1–( –2 )= 3%
SSD = 200 m and h1 = 1.2 m and h2= 0.15 m as given N1 up gradient, and n2 - down gradient. So curve is
summit curve. Assume L > SSD
LS= N⋅S2
2(√H+√h)2
= 3 x ( 200)2
100 2 x ((√1.2+√0.15 )2
L = 272.91 m > 200 m
L = 272.91 m
Q.2 A horizontal curve is to be designed in a region with limited space. Which of the following
measures can be used to decrease the radius of curvature ?
(a)Decrease the design speed
(b)Increase the super elevation
(c)Increase the design speed
(d)Restrict vehicles with higher weight from using the facility.

2. Answer- (b).
e+f = v2
127 R
(GATE 2021,SET-1)
3.A signalized intersection operates in two phases. The lost time is 3 seconds per phase. The
maximum ratios of approach flow to saturation flow for the two phases are 0.37 and 0.40. The
optimum cycle length using the Webster’s method (in seconds, round off to one decimal place) is
.
Answer- 60.7 to 61.1
yA=0.37 yB=0.40
Y = yA + yB = 0.37 + 0.40 = 0.77
L= 3sec. per phase (2 Phase) Co = 1.5L+5
1-Y
= 60.869sec.
4.The shape of the most commonly designed highway vertical curve is
(A) circular (single radius)
(B) circular (multiple radii) (GATE 2021,SET-1)
(C)parabolic
(D)spiral Answer- (c)
Q.5 A highway designed for 80 km/h speed has a horizontal curve section with radius 250 m. If
the design lateral friction is assumed to develop fully, the required super elevation is
(A) 0.02
(B) 0.05 (GATE 2021,SET-1)
(C) 0.07

3. (D) 0.09
Answer- (B)
Solution: e + f = V2
/ 127 R e =(
V2
/ 127 R ) – f
e = ( 802
/ 127 x 250 ) – 0.15
e = 0.05
Q.6 Spot speeds of vehicles observed at a point on a highway are 40, 55, 60, 65 and 80 km/h. The
space- mean speed (in km/h, round off to two decimal places) of the observed vehicles is
Answer- 55.50 to 58.53
Solution: Space mean speed : avg. speed of vehicle over a certain road length at any time.
Vs = n
( 1/v1 + 1/v2 + ---- + 1/vn )
Vs = 5 = 56.99
( 1/40 + 1/55 + 1/60 + 1/65 +1/80 )
Q 7. The accuracy of an Electronic Distance Measuring Instrument (EDMI) is specified as ± (a mm +
b ppm). Which one of the following statements is correct?
A.Both a and b remain constant, irrespective of the distance being measured.
B.a remains constant and b varies in proportion to the distance being measured.
C.a varies in proportion to the distance being measured and b remains constant.
D.. Both a and b vary in proportion to the distance being measured (GATE2017 ,S-1)

4. Answer : Option B Explaination / Solution:
Accuracy of EDMI is generally stated in terms of constant instrument error and measuring error
proportional to distance being measured. ± (a mm + b ppm) The first part in this expression indicates a
constant instrument error that is independent of length of line measured. Second component is
distance related error.
Q8 . The radius of a horizontal circular curve on a highway is 120 m. The design speed is 60 km/hour,
and the design coefficient of lateral friction between the tyre and the road surface is 0.15. The
estimated value of superelevation required (if full lateral friction is assumed to develop), and the
value of coefficient of friction needed (if no superelevation is provided) will, respectively, be
A. 1/11.6 and 0.10
B. 1/10.5 and 0.37 (GATE2017 ,S-1)
C. 1/11.6 and 0.24
D. 1/12.9 and 0.24
Answer : Option C
Explaination / Solution:
e + f = v2
/ 127 R required e (if full lateral friction is assumed to develop f = 0.15 )
e = 602
0.15 = 0.086
127 x 120
e + f = v2
/ 127 R ( e = 0 , if no superelevation is provided )
f = 602
= 0.236 ~ 0.24
127 x 120
Q 9. A two lane, one-way road with radius of 50 m is predominantly carrying lorries with
wheelbase of 5 m. The speed of lorries is restricted to be between 60 kmph and 80 kmph. The
mechanical widening and psychological widening required at 60 kmph are designated as wme,80
and wps,80, respectively. The mechanical widening and psychological widening required at 80
kmph are designated as
and wme,80 and wps,80, respectively. The correct values of wme,60, wps,60 respectively are
(GATE2017 ,S-1)

5. A. 0.89 m, 0.50 m, 1.19 m, and 0.50
m
B. 0.50 m, 0.89 m, 0.50 m, and 1.19
m
C. 0.50 m, 1.19 m, 0.50 m, and 0.89
m
D. 1.19 m, 0.50 m, 0.89 m, and 0.50
m
Answer : Option B Explaination /
Solution:
Q.10. A road is being designed for a speed of 110 km/hr on a horizontal curve with a super elevation
of 8%. If the coefficient of side friction is 0.10, the minimum radius of the curve (in m) required for
safe vehicular movement is
(GATE2014 ,S-2)
A. 115.0
B. 152.3
C. 264.3
D. 528.5
Answer : Option D Explaination / Solution:
Ruling gradient = V2
/(127(e+f))
= (110×110)/(127(0.08+0.10)) = 529.30m
Q11. On a section of a highway the speed-density relationship is linear and is given by v = [80-(2/3)k];
where v is in km/h and k is in veh/km. The capacity (in veh/h) of this section of the highway would be
A. 1200
B. 2400
C. 4800 (GATE2014 ,S-2)
D. 9600

6. Answer : Option B
Explaination / Solution:
Q12. As per IRC : 67 : 2001, a traffic sign indicating the Speed Limit on a road should be of (GATE 2010)
A. Circular Shape with white Background and Red Border
B. Triangular Shape with White Background and Red Border
C. Triangular Shape with Red Background and White Border
D. Circular Shape with Red Background and White Border
Answer : Option A

7. Stop sign STOP Octagonal shape
(Exception)
Prohibitory/Mandatry/Regulatary Sign
Backgroung (Red)
Colour Boundry (White)
Shape --- Circular
Give way sign Inverted triangle
with its apex
pointing
downwards
(Exception)
Prohibitory/Mandatry/Regulatary Sign
Ex. Speed limit , No overtaking etc.
Speed limit 80 Circular shape Prohibitory/Mandatry/Regulatary Sign
All warning sign Triangle with its
apex upwards
Warning Sign Backgroung
(White) Colour
Boundry (Red)
Shape --- Triangular
Ex. Left hand curve , Speed
breaker , Pedestrian crossing
etc.
Informatry Sign Rectangular Ex. Hospital, Location , Restaurant etc.

8. Q13. Consider the following statements in the context of geometric design of roads.
I.: A simple parabolic curve is an acceptable shape for summit curves
II.: Comfort to passengers is an important consideration in the design of summit
curves. The correct option evaluating the above statements and their relationship is
(GATE 2010)
A. I is true, II is false
B. I is true, II is true, and II is the correct reason for I
C. I is true, II is true, and II is NOT the correct reason for I
D. I is false, II is true
Answer : Option A
Q14. The design speed for a two-lane road is 80 km/h . When a design vehicle with a wheelbase of
6.6 m is negotiating a horizontal curve on that road, the off-tracking is measured as 0.096 m. The
required widening of carriageway of the two-lane road on the curve is approximately
A. 0.55 m (GATE2010)
B. 0.65 m
C. 0.75 m
D. 0.85 m
Answer : Option C.
Solution: WE = nl2
/2R + V / 9.5 R
= 2 x 6.62
+ 80
2 x 227 9.5 227
= 0.192 + 0.56
= 0.75
(GATE 2009)
Q15 A three-phase traffic signal at an intersection is designed for flows shown in the figure below.
There are six groups of flows identified by the numbers 1 through 6. Among these 1, 3, 4 and 6 are
through flows and 2 and 5 are right turning. Which phasing scheme is not feasible ?

9. A. P
B. Q
C. R
D. S
Answer : Option C.
Q16. The shape of the STOP sign according to IRC:67-2001 is
A. circular surveying
B. triangular
C. octagonal
D. rectangular
(GATE 2008)
Answer : Option C.
Q17. A linear relationship is observed between speed and density on a certain section of a highway.
The free flow is speed is observed to be 80 km per hour and the jam density is estimated as 100
vehicles per km length. Based on the above relationship, the maximum flow expected on this
section and the speed at the maximum flow will respected be-
A. 8000 vehicles per hour and 80 km per hour
B. 8000 vehicles per hour and 25 km per hour (GATE 2008)
C. 2000 vehicles per hour and 80 km per hour

10. D. 2000 vehicles per hour and 40 km per hour
Answer : Option D
Solution: Vf = 80 kmph Kj = 100 veh/km length Speed at max. flow V = Vf/2 = 80/2 = 40 kmph
Max.flow = 1/4 x Vf x Kj = (1/4 x 80 x 100) = 2000 veh/hr.
Q18. If the jam density is given as kj and the free flow speed is given as uf, the maximum flow for a linear
traffic speed-density model is given by which of the following options?
A.(1/4)kj × uf
B.(1/3)kj × uf
C.(3/5)kj × uf
(GATE 2011)
D.(2/3)kj × uf
Answer : Option A
Q.19 Calculate the radius of a rotary curve for a vehicle speed of 40kmph and coefficient of friction as
0.45:
(a) 12.73 m (DSSSB AE 2019)
(b) 30.5 m (c) 22.34 m
(d) 28 m Answer : (d)
Solution: e+f = v2
127R
e=0
R=
v2
127f
= 40
127 x 0.45
= 27.99 m

11. Q.20 According to Indian Road Congress , the width of carriageway is
(i) 3.75 m for single lane
(ii) 7.0 m for two lanes without raised kerbs (GPSC AE 2019)
(iii)7.5 m for two lanes with raised kerbs
Which of these statement(s) is/are true?
(a) (i) & (ii)
(b) (ii) & (iii)
(c) (i) & (iii)
(d) (i) ,(ii) & (iii)
Answer : (d)
Solution : AS per IRC:
Q.21 IRC recommendation for maximum width of a vehicle is :
(a) 1.75 m
(b) 2.00 m
(c) 2.44 m
(d) 4.88 m
(Karnataka PSC AE 2015) (UPPSC AE
2008)
( Uttarakhand Combined State AE 2007)
Answer : (c)
Solution: According to I.R.C. recommendation for maximum width of vehicle is :
Note : Height of double Decker bus is 4.72 m
Q.22 The rise and fall along the road is known as –
(a) Super elevation
Class of road Width of Carriageway
Single lane 3.75 m
Two lane, without raised kerb 7.0 m
Two lane , with raised kerb 7.5 m
Intermediate carriageway 5.5 m
Multilane pavements 3.5 m
Length 10.60 m
Width 2.44 m
Height 3.80 m

12. (b)Slope
(c)Camber
(d)Side Slope
Answer : (b)
(UPPCL AE 2014)
Q.23 The absolute minimum radius for a horizontal curve designed for a speed of 80kmph
, given the permissible values of super elevation and coefficient of friction are 0.04 and
0.16
(a)458 m
(b)252 m
(c)150 m
(d)105 m Answer ;
(b)
Solution : (e + f )
=
(APPSC AEE 2016)
V2 ,
127R
(0.04 + 0.16) = 802
/ 127 R R = 251.96 m ~ 252 m
Q.24 For a total reaction time of 2.5sec, coefficient of friction 0.35, design
speed of 80kmph, what is the stopping sight distance on a highway?
(a)124 m
(b)132 m
(c)76 m
(d)56 m Answer : (a)
Solution : S.S.D. = V.tr +
(BPSC AE 2019 )
V2
254(f+S%)
= 80 x 2.5 + (80)2
=127.59 m
254 x 0.35)
127 near the 124 so correct is 124according to option.
Q.25 What is the value of camber that should be provided in case of WBM pavement surface in
an area of heavy rainfall ?
(a) 1 in 30
(b) 1 in 48
(c) 1 in 60
(d) 1 in 72
(GPSC AE 2019)
(BPSC AE 2019, UPPSC AE 2019)

13. Answer : (a)
Solution : The value of camber recommended by IRC for different type of road surface.
Q.26 Which one of the following in not a type of transition curve used?
(a) Clothoid
(b) Parabolic
(c)Lemniscates
(d)Cubic parabola
Answer: (b)
(UPRVUNL AE 2015)
Q.27 Geometric design of highway includes (i) Horizontal alignments (ii) Vertical
alignment,
(iii) Arbouri- Culture, (iv) Cross Section. Choose the right combination.
(a) (i) , (ii) and (iii)
(b) (i) ,(ii) and (iv)
(c) (ii), (iii) and (iv)
(d) (i) ,(ii),(iii) and
(iv) Answer : (b)
(MPPSC AE 2014)
Q.28 At highway stretches where the required Overtaking Sight Distance can not be
provided , in such sections it is necessary to incorporate at least-
(a)Three times the stopping Sight Distance
(b)One-third of the required Intermediate Sight Distance
(c)Half of the required Intermediate Sight Distance
(d)Twice the stopping Sight Distance Answer: (d)
Solution : I.S.D.= 2 x S.S.D. (GPSC AE 2019)
Q.29 The instrument used to measure Roughness index is –
(a)Profilometer
(b)Deflectometer (GPSC AE 2019)
Types of road Range Of Camber
Heavy Rainfall Light Rainfall
Concrete Road 1 in 50 (2%) 1 in 60 (1.7%)
Bituminous Road 1 in 40 (2.5%) 1 in 50 (2%)
W.B.M. or Gravel Road 1 in 33 (3%) 1 in 40 (2.5%)
Earthen road 1 in 25 (4%) 1 in 33 (3%)

14. (c)Brinellnometer
(d)Bump Integrator Answer : (d)
Solution : It is the cumulating undulation (rise & fall) measure per unit length of road .it is
measured by bump integrator.
B.I. = 630 (I.R.I.) 1.12
I.R.I. – International Roughness Index
As Per I.R.C.-
Q.30 A summit curve is formed at the intersection of 3% up gradient and 5% down gradient . To
provide a stopping sight distance of 128m , length of summit curve is needed is:
(a)256 m
(b)384 m
(c)298 m
(d)321 m Answer
: (c)
Solution : n1 = 3%
(APPSC AEE ,2012)
(BHEL ET 2019, JPPSC AE 2019)
(ESE 2005, 1995)
n2 = -5%
N = n1 – n2 = 3% - (-5%) = 8%
Stopping sight distance S = 128
m Suppose L > S
Q.31 The transverse slope provided to the road surface for drainage of the rain water is known as;
(a)Camber
(b)Gradient
(c)Super elevation
(d)Curve Answer
(a)
(GPSC Assistant Prof. 2016)
Q.32 If N is the net difference of grades, S is the minimum overtaking sight distance
in meters , the length (L) of a summit curve, is
(a) NS/4
B.I. (mm/km) Types of Pavement
<1500 Good
1500- 2500 Satisfactory
2500- 3200 Bad (Repair)
>3200 Uncomfertable (Reconstruct)
L = NS2
0.08 x 1282
= 297. 89 m ~ 298 m (length of summit curve)
4.4 4.4

15. (b) NS2
/4
(c) NS2
/4.8
(d) NS2
/9.6
Answer: (d)
(BPSC AE 2006)
Solution : Length of summit curve – length of summit curve for
OSD/ISD. Case (i) When L > S
L = NS2
/8H H = 1.2 m (Height of driver eye)
h = 1.2 m (Height of
obstruction)
L = NS2
/ 9.6
Case (ii) When L < S
L = 2S – 9.6
N
Q.33 If R is the radius of curve and L is the length of the chord the shift of the curve is
(meter unit)-
(a)L2
/2R
(b)L2
/4R
(c)L2
/16R
(d)L2
/24R Answer : (d)
Solution : When a transition curve is introduced between straight and circular curve when
circular has to be shifted so that transition curve meets circular curve tangentially.
R = Radius of curve
LT = Length of long chord
34 The length of National Highway (km) as per Lucknow road plan is given by
(a) Area of the country(Km2
)/75
(b) Area of the country(Km2
)/50
(c) Area of the country(Km2
)/40
(d) Area of the country(Km2
)/25
(GPSC AE June 2019,ESE 2000)
Answer : Option B
Shift = LT
2
/24R

16. Solution : Road length as per 3rd
20 yr plan-
(i) Total length of road = 4.74 x No. of towns &
villages Or
Road desity x Area (km2
)
Max
(ii) Length of National Highway (km) = Area (km2
)/ 50
(iii) Length of State Highway (km) = Area(km2
) / 25
62.5 x no. of towns – length of N.H.
Max.
(iv) Length of M.D.R.(km) =
Area (km2
) / 12.5
90 x no. of towns
Q-35 The Nagpur road plan formula were prepared assuming a shape of:
(a) Star and Square pattern
(b) Star and Grid pattern
(c) Star and Circular pattern
(Rajasthan Nagar Nigam AE 2016,TRB poly 2017)
(d) Star and Rectangular pattern Answer : Option B
Q-36 The target of achieving an overall density of road lenth in third twenty year Road
Development plan (1981-2001) was
a. 32 km/100 km2
b. 45.7 km/100 km2
c. 82 km/100 km2
d.
100 km/100 km2
Answer: Option C
Solution:
(U.K. Combined A E Paper 2012)
Ist
20 years plan 2nd
20 years plan 3rd
20 years plan
Name Nagpur Bombay Lucknow
Duration 1943 - 1963 1961 - 1981 1981 - 2000
Density 16 km / 100 km2
32km / 100 km2
82 km / 100 km2
Pattern Star & Grid - -
Express Highway - 1600km added later on 2000km
Classification NH / SH
MDR / ODR /
VR
Same Primary- NH & EH
Secondary – SH & MDR
Rural – ODR & VR

17. Q-37 Three basic modes of transportation are
a.Land,Water,Air
b.Highway,railway,airway
c.Airway,waterway and highway
d.
(TNPSC A E Paper 2018)
Pipeline,belt conveyor and elevator Answer: Option A
Solution : Land : Road and Rail
Water : Boat , Ship , Submarines etc.
Air : Aeroplane , Helicopter , Hot-air balloon etc.
Q-38 According to Nagpur plan, Indian roads have been classified into how many categories
(KPSC A E 2017,2015,U.K. combined A.E. 2012)
Answer: Option B
Q-39 According to Nagpur plan, Indian roads have been classified into how many categories
(KPSC A E 2017,2015,U.K. combined A.E. 2012)
Answer: Option B
Q-40 As per the modified classification of road system by the Third Road Development
Plan,1981- 2001,the roads in the country under “primary system” of road network consist of-
a. Expressways and National Highways
b. State Highways and Major District Roads
c. Other District Roads and Village Roads
d. All the above
(MPSC 2017)
Answer: Option A
a. 4
b. 5
c. 6
d. 7
a. 4
b. 5
c. 6
d. 7

18. Q-41 The second twenty year road plan is also called as:
a. Madras road plan
b. Lucknow road plan
c. Bombay road plan
d. Delhi road plan
e. Calcutta road plan
(CGPSC AE 2017)
Answer: Option C
42 The road foundation for modern highways construction,was developed by:
a. Tresaguet
b. Telford (OPSC AEE 2015)
c. Telford and Macadam simultaneously
d. Macadam
Answer: Option D
Solution : Road construction sequence : Romans – Tresaguet – Metcalf – John
Macadam Q-43 For the administration of road transport, a Motor Vehicle Act was
enacted in:
(Haryana PSE AEE 2018)
Answer: Option C
Q-44 IRC Committee was appointed by the Government with M.R. Jayakar as chairman in ::
(TN PSC AE 2015)
Answer: Option D
Solution : IRC committee was appointed by the government with M.R. Jayakar as
chairman in 1927.
a. 1927
b. 1934
c. 1939
d. 1947
e. 1971
a. 1920
b. 1925
c. 1926
d. 1927

19. Q-45 PMGSY, a programme of the Government of India ,deals with:
a.Urban Employment Generation
b.Rural Road Development (KPSC AE 2020)
c.Rural Employment Generation
d.Rural Electrification Answer: Option B
Explaination : PMGSY a programme of the government of india , deals with rural
road development.
Q-46 The Indian Road Congress came into existence in:
Answer: Option B
Q-47 Pradhan Mantri Gram Sadak Yojana (PMGSY) was launched in the year:
(DSSSB AE 2019)
Q-48 Pradhan Mantri Gram Sadak Yojana (PMGSY) was launched in the year:
(DSSSB AE 2019)
Answer: Option C
Q-49 The zero mile stone in India is located at:
a. Patna
b. Chhindwara
c. Seoni
d. Nagpur
(APPSC Poly. Tech. Lect. 2020)
a. 1927
b. 1934 (TNPSC AE 2012, Nagaland PSC 2017)
c. 1943
d. 1947
a. 2008
b. 2015
c. 2000
d. 2003
Answer: Option C
a. 2008
b. 2015
c. 2000
d. 2003

20. Answer: Option D
Q-50 On a circular curve, the rate of super elevation is “e” while negotiating the curve,
vehicle comes to a stop.It was observed that the stopped vehicle is sliding inwards in
radial direction. If the coeffiecient of friction is “f” which of the following is true?
a. e> f
b. e<f
c. e<2f
d. None of these
(MPPSC AE 2014 )
Answer: Option A
Solution : If e > f , then on circular curve ,stopped vehicle is starts to slide inwards in radial
direction. Q-51 Equation for the length of transition curve for plain and rolling terrain is:
a. Ls=3.7V2
/R
b. Ls=4.7V2
/R
c. Ls=2.7V2
/R
d. Ls=1.7V2
/R
Answer: Option C
(TRB Poly. Lect. Tech.2017 )
Explaination :Length of transition curve should be designed as per the maximum of following 3 criteria
-
(1)As per rate of change of centrifugal acceleration – LT = (0.278 V)3
CR
(2)As per rate of introduction of super – elevation - (i) LT = 150x (for plain & rolling terrain)
(ii) LT = 60x ( for mountainous & steep terrain) (x is elevation at outer edge w.r.t. level of rotation)
(3)Minimum length of transition curve : (i) LT = 2.7 V2
/R (for plain & rolling terrain)
(ii) LT = V2
/R ( for mountainous & steep terrain)
Where, LT in m. , R in m , V in kmph.
52 Equation for the length of transition curve for plain and rolling terrain is:
a. Ls=3.7V2
/R
b. Ls=4.7V2
/R
c. Ls=2.7V2
/R
(TRB Poly. Lect. Tech.2017 )

21. d. Ls=1.7V2
/R
Answer: Option C
Q-53 If the cross slope of a terrain is 20%,according to IRC classification, it is a:
a. Plain terrain
b. Rolling terrain
c. Mountainous terrain
d. Steep terrain
(Kerala PSC AE 2015 )
Answer: Option B
Explaination : Regions are classified according to the cross slope as per given below
Q.54 The width of carriageway for two lane , with raised kerbs, standardized by Indian Road Congress
is given by-
(a) 7.5 m
(b) 7.0 m (TNPSC AE 2012 , GPSC AE 2016)
(c) 5.5 m
(d)6.0 m
Answer : (a)
Explainati
on:
Terrain Percentage cross slope of country
Plain 0 to 10
Rolling 10 to 25
Mountainous 25 to 60
Steep Greater than 60
Class of road Width of carriageway
Single lane 3.75 m
Two lanes, without raised kerbs 7.0 m
Two lanes , with raised kerbs 7.5 m
Intermediate carriageway 5.5 m
Multilane pavements 3.5 m per lane

22. Q.55 Super elevation is provided on a curve at –
(a)Inner edge
(b)Center
(c)Outer edge
(d)Quarter point Answer : (c)
Q.56 The terrain may be classified as rolling terrain , if the cross – slope of land
is-
(a)up to 10% ( UPPSC AE 2008)
(b)between 10% to 25% (RPSC ACF 2011, JPSCAE 2009)
(c)between 25% to 60%
(d)more than 60% Answer: (b)
Q.57 The sequence of survey in a road project is –
(a) Topographic , reconnaissance , preliminary and detailed
(b) Reconnaissance , topographic , preliminary and detailed
(c) Preliminary , reconnaissance , topographic and detailed (UPSC JWM 2017)
(d) Topographic , preliminary , reconnaissance and detailed (UPRVUNL AE 2015)
Answer : (a)
Terrain Cross-slope in %
Plain 0-10
Rolling 10-25
Mountainous 25-60
Steep >60

23. Topographic
Map Study
Reconnaissance survey
Detailed location survey
Construction survey
Q.58 As per IRC , the PCU value for cars and light commercial vehicles:
(a) 1
(b) 0.5
(c) 2.5 (DSSSB AE 2019)
(d) 4 to 6
Answer : (a)
Q.59 The following sign are painted in circular shape:
(a) Regulatory
(b) Warning (GPHC AE 2018)
(c) Informatory
S.No. Vehicle class Equivalent Factor
1 Passenger car, tempo auto rickshaw ,
tractor
1.0
2 Bus , truck , tractor trailer unit 3.0
3 Motor cycle , scooter pedal cycle 0.5
4 Horse drawn Vehicle 4
5 Small bullock cart and hand cart 6

24. (d) Guide
Answer : (a)
Q.60 Traffic volume is equal to:
(a) traffic density x traffic speed
(b) traffic density / traffic speed (GPSC AE 2016, UPPSC AE 2007 & 2004 & 2003)
(c)traffic speed / traffic density
(d)none of the above Answer : (a)
Q. 61 The height of mandatory traffic sign discs above the ground level should be
:
(a)2.5 m (UKPSC AE 2013)
(b)2.8 m
(c)3.5 m
(d)3.8 m Answer : (b)
Q.62 Enoscope is used to find-
(a) space-mean speed
(b) spot speed only (TSPSC AEE 2017, Haryana PSC AE 2017, MPPSC AE 2016)
(c)spot speed and space-mean speed
(d)flow of vehicles only Answer: (b)
Signs Shape
Mandatory/Regulatory Circular
Cautionary/Warning Triangular
Informatory Rectangular

25. Q.63 Which of the following joints are provided in cement concrete pavement to address
shrinkage cracking?
(a) Expansion joints
(b) Construction joints (CIL MT 2017)
(c)Pin joints
(d)Contraction joints Answer : (d)
Q.64 Bottom most component of a flexible pavement ,
is
(a) sub-grade
(b) sub-base (WBPSC AE 2016)
(c)base
(d)base course Answer: (a)
Q.65 IRC 37-2001 revised version for flexible pavement design has been designed
as:
(a) 4-layer
(b) 3-layer (GPSC AE 2017)
(c)2-layer
(d)5-layer Answer: (a)
Q.66 As per IRC code for flexible pavements, designed life for National Highways and State
Highways should be-
(a) 20 years
(b) 15 years (APPSC AE 2016)
(c) 10-15 years
(d)<10 years

26. Answer: (b)
Q.67 The top of the ground on which foundation of road rests is called-
(a) soiling
(b) base
(c)either (a) or (b)
(d)None of these
Answer : (d)
(Nagaland PSC 2017, BPSC AE 2016)
Tack Coat Seal Coat Prime Coat
SurfaceCourse
Binder Course
Base Course
Sub base Course
Compacted
Subgrade
Natural
Subgrade