MCQs of Highway Transportation_Part 2: Highway Geometric design (Transportation Engineering - 3150611)

Transportation Engineering (3150611) MCQs

MCQs of Highway Transportation_Part 2: Highway Geometric design

Showing 21 to 20 out of 30 Questions

21.

Calculate the minimum sight distance required to avoid a head on collision of two cars approaching from the opposite directions at 90 and 60 kmph. Assume a reaction time of 2.5 seconds, coefficient of friction 0.7 and a brake efficiency of 50 percent in both cases.

(a)	153.6 m
(b)	82.2 m
(c)	236 m
(d)	71.4 m

22.

Driver's reaction time of _______ seconds is considered for determining SSD.

(a)	2.2
(b)	2.5
(c)	2.1
(d)	3.5

23.

Driver's reaction time of _______ seconds is considered for determining OSD.

(a)	2.0
(b)	2.2
(c)	2.5
(d)	2.6

24.

Roadway width for NH and SH (two lanes) passing through rolling terrain as per IRC is _____________.

(a)	7.0 m
(b)	7.5 m
(c)	5.5 m
(d)	12.0 m

25.

_________ is the centrifugal ratio.

(a)	$\frac{P}{W} = \frac{R^{2}}{v g}$
(b)	$\frac{P}{W} = \frac{v^{2}}{g R}$
(c)	$\frac{P}{v} = \frac{W^{2}}{g R}$
(d)	$\frac{P}{R} = \frac{W v^{2}}{g}$

26.

The maximum value of super-elevation is limited to ____________.

(a)	0.07
(b)	0.70
(c)	0.007
(d)	70.0

27.

On hill roads not bound by snow maximum super-elevation up to __________ is recommended.

(a)	7 %
(b)	4 %
(c)	10 %
(d)	12 %

28.

The radius of a horizontal circular curve is 100 m. The design speed is 50 kmph and the design coefficient of lateral friction is 0.15. Calculate the super-elevation required if full lateral friction is assumed to develop.

(a)	1 in 21
(b)	1 in 25
(c)	1 in 30
(d)	1 in 15

29.

From practical consideration it is suggested that the super-elevation should be provided to fully counteract the centrifugal force due to _______ of design speed.

(a)	75 %
(b)	Twice
(c)	Thrice
(d)	50 %

30.

A two-lane road with design speed 80 kmph has horizontal curve of radius 480 m. Design the rate of super-elevation for mixed traffic.

(a)	5.9 %
(b)	0.59 %
(c)	9.5 %
(d)	0.95 %

Showing 21 to 20 out of 30 Questions