Highway Geometric Design

On a two-lane highway, a horizontal curve of radius 300 m is provided. The design speed is $80 \mathrm{~km} / \mathrm{h}$. If the longest wheelbase of vehicle expected on this highway is 7 m , then the extra widening req...

The point where the road alignment changes from a tangent to a curve is known as___________ $\qquad$

A vertical summit curve on a freight corridor is formed at the intersection of two gradients, +3.0% and −5.0%. Assume the following: - Only large-sized trucks are allowed on this corridor - Design speed = 80 kmph - Eye h...

A car is travelling at a speed of 60 km/hr on a section of a National Highway having a downward gradient of 2%. The driver of the car suddenly observes a stopped vehicle on the car path at a distance 130 m ahead, and app...

In general, the outer edge is raised above the inner edge in horizontal curves for

For a horizontal curve, the radius of a circular curve is obtained as 300 m with the design speed as 15 m/s. If the allowable jerk is 0.75 m/s 3 , what is the minimum length (in m, in integer) of the transition curve?___...

G 1 and G 2 are the slopes of the approach and departure grades of a vertical curve, respectively. Given |G 1 | < |G 2 | and |G 1 | ≠ |G 2 | ≠ 0 Statement 1 : +G 1 followed by +G 2 results in a sag vertical curve. Statem...

As per the Indian Roads Congress guidelines (IRC 86: 2018), extra widening depends on which of the following parameters?

Which of the following is equal to the stopping sight distance?

A horizontal curve is to be designed in a region with limited space. Which of the following measure(s) can be used to decrease the radius of curvature?

A parabolic vertical crest curve connects two road segments with grades +1.0% and $$-$$2.0%. If a 200 m stopping sight distance is needed for a driver at a height of 1.2 m to avoid an obstacle of height 0.15 m, then the...

A super-elevation e is provided on a circular horizontal curve such that a vehicle can be stopped on the curve without sliding. Assuming a design speed v and maximum coefficient of side friction f max , which one of the...

While aligning a hill road with a ruling gradient of 6%, a horizontal curve of radius 50 m is encountered. The grade compensation (in percentage, up to two decimal places) to be provided for this case would be ______.

A motorist traveling at 100 km/h on a highway needs to take the next exit, which has a speed limit of 50 km/h. The section of the roadway before the ramp entry has a downgrade of 3% and coefficient of friction ( f ) is 0...

A superspeedway in New Delhi has among the highest super-elevation rates of any track on the Indian Grand Prix circuit. The track requires drivers to negotiate turns with a radius of 335 m and 33° banking. Given this inf...

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 moveme...

The perception-reaction time for a vehicle travelling at 90 km/h, given the coefficient of longitudinal friction of 0.35 and the stopping sight distance of 170 m (assume g = 9.81 m/s2), is _________ seconds.

The value of lateral friction or side friction used in the design of horizontal curve as per India Roads Congress guidelines is

While designing a hill road with a ruling gradient of 6%, if a sharp horizontal curve of 50m radius is encountered, the compensated gradient at the curve as per the Indian Roads Congress specifications should be

Pradhan Mantri Gram Sadak Yojana (PMGSY), launched in the year 2000 aims to provide rural connectivity with all weather roads. It is proposed to connect the habitations and plain areas of populations more than 500 person...

The star and grid pattern of road networks are adopted in

SSD and Friction coefficients are

The design value of lateral friction coefficient on highway is

The ruling minimum radius of horizontal curve of a national highway in plain terrain for a ruling design speed of 100 km/hour with e = 0.07 and f = 0.15 is close to

Design rate of super elevation for horizontal highway curve of radius 450 m for a mixed traffic condition, having a speed of 125 km/hour is

Width of carriage way for a single lane is recommended to be

The reaction time for calculating stopping sight distance may be assumed as

The total length (in km) of the existing National Highways in India is in the range of

For a highway with a design speed of 100kmph, the safe OSD is assume acceleration as 0.53 $$m/sec^2$$. the road is two lane with two way traffic. User other specifications as per IRC

The value of camber recommended for CC roads in area of heavy rainfall is

If the design speed is 80kmph, perception reaction time is 3sec and coefficient of friction is 0.5, then the SSD is ________.

The convexity provided to the carriage way between the crown and edge of pavement is known as

A vehicle traveling on dry, level pavement at 80kmph had the brakes applied. The vehicle traveling 76.5 m before stopping. what is the coefficient of friction that has developed?

The distance traveled by a moving vehicle during perception time and break reaction time is known as