highway design

An incident occurred on one side of a median on a four-lane dual carriageway road section. This incident disrupted the traffic movement in one direction. Traffic police diverted th...

Which of the following statements is/are TRUE in the context of the geometric design of highways?

A vertical curve is formed by a descending gradient of 1 in 40 meeting an ascending gradient of 1 in 50. Consider the following: Stopping Sight Distance (SSD) = 90 m Height of head...

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 cor...

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

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

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/s³, what is the minimum length (in m, i...

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...

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...

The stopping sight distance (SSD) for a level highway is 140 m for the design speed of 90 km/h. The acceleration due to gravity and deceleration rate are 9.81 m/s² and 3.5 m/s², re...

In an urban area, a median is provided to separate the opposing streams of traffic. As per IRC:86-1983, the desirable minimum width (in m, expressed as integer) of the median, is _...

A road in a hilly terrain is to be laid at a gradient of 4.5%. A horizontal curve of radius 100 m is laid at a location on this road. Gradient needs to be eased due to combination...

A parabolic vertical curve is being designed to join a road of grade +5% with a road of grade -3%. The length of the vertical curve is 400 m measured along the horizontal. The vert...

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...

A 7.5 m wide two-lane road on a plain terrain is to be laid along a horizontal curve of radius 510 m. For a design speed of 100 kmph, super-elevation is provided as per IRC: 73-198...

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 (...

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

SSD and Friction coefficients are

The design value of lateral friction coefficient on highway is

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