# Highway Traffic Engineering Objective Questions Answers – Set 23

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## Q1. Pick up the incorrect statement from the following. The super-elevation on roads is

(A) Directly proportional to width of pavement
(B) Directly proportional to velocity of vehicles
(C) Inversely proportional to acceleration due to gravity
(D) Inversely proportional to the radius of curvature

Answer: (B) Directly proportional to velocity of vehicles

(A) 50 cm
(B) 60 cm
(C) 70 cm
(D) 100 cm

(A) 4.7 m
(B) 5.7 m
(C) 6.7 m
(D) 7.7 m

(A) 2°
(B) 3°
(C) 4°
(D) 5°

## Q5. Design of highways is based on

(B) Axle spacings
(C) Wheel bases
(D) All the above

## Q6. On most smooth hard surfaced roads, rolling resistance to moving vehicles, ranges from

(A) 5 kg to 7 kg/tonne
(B) 7 kg to 9 kg/tonne
(C) 9 kg to 11 kg/tonne
(D) 11 kg to 13 kg/tonne

Answer: (C) 9 kg to 11 kg/tonne

(A) Spangler
(B) Picket
(C) Kelly
(D) Goldbeck

## Q8. The width of the right of way in urban area, is kept between 24 m to 60 m for

(A) National Highways
(B) State Highways
(C) Both (a) and (b)
(D) None of these

(A) 1618.9 m
(B) 1816.9 m
(C) 1718.9 m
(D) 1817.9 m

## Q10. If ‘L’ meters is the distance between extreme axles of a vehicle, its gross load should not exceed

(A) 1525 (L + 4.3) – 14.7 L2
(B) 1526 (L + 5.3) – 14.7 L2
(C) 1525 (L + 6.3) – 14.7 L2
(D) 1525 (L + 7.3) – 14.7 L2

Answer: (D) 1525 (L + 7.3) – 14.7 L2

(A) 10 cm
(B) 12 cm
(C) 15 cm
(D) 18 cm

(A) 5 cm
(B) 6 cm
(C) 7 m
(D) 9 m

## Q13. If x% is the gradient of an alignment and y% is the gradient after proper super-elevation along a curved portion of a highway, the differential grade along the curve, is

(A) (x + y) %
(B) (x – y) %
(C) (y – x) %
(D) (y + x) %

Answer: (C) (y – x) %

(A) 2.45 m
(B) 2.75 m
(C) 3.66 m
(D) 4.90 m

(A) 10 meters
(B) 20 meters
(C) 25 meters
(D) 30 meters