Geometric design of highway

The design of horizontal and vertical alignments, super elevation, gradient is worst affected by

• Length of vehicle

• Width of vehicle

• Speed of vehicle

• Weight of vehicle

The extra width of pavement is provided on

• Horizontal curve

• Length of pavement

• Width of pavement

• Superelevation

Transition curve is introduced in

• Circular curve

• Horizontal curve

• Between horizontal curve and circular curve

• Vertical curve

The most important factor that is required for road geometrics is

• SSD

• OSD

• ISD

• Speed of vehicle

A part of pavement raised with respect to one side keeping the other side constant is called

• Footpath

• Kerb

• Super elevation

• Camber

the length of road visible ahead to the driver at any instant called

• Sight distance

• Stoping sight distance

• Non passing distance

• Overtaking sight distance

The near worst-case distance a vehicle driver needs to be able to see in order to have room to stop before colliding with something in the roadway is called

• Sight distance

• Stoping sight distance

• Overtaking sight distance

• Passing distance

the minimum distance open to the vision of the driver of a vehicle intending to overtake the slow vehicle ahead safely against the traffic in the opposite direction is called

• Sight distance

• Non Passing distance

• Over taking sight distance

• Stoping sight distance

the transverse slope provided to counteract the effect of centrifugal force and reduce the tendency of vehicle to overturn and to skid laterally outwards by raising the pavement outer edge with respect to inner edge.

• Higher elevations

• Superelevation

• Camber

• Transition curve

In an ideal transition curve, the radius of curvature

• constant

• at any point is directly proportional to its distance from the point of commencement

• is inversely proportional to the radius of main curve

• is directly proportional to the radius of main curve