Exam 11: Highway Design and Traffic Safety

The traffic census is carried out to study

Highway capacity is defined as the total number of vehicles

On horizontal and vertical curves, crossing sight distance must be provided to avoid any collision of two vehicles coming from opposite directions.

According to IRC recommendations, the width of transverse expansion joint should be

According to IRC : 52-1973, for a single lane National highway in a hilly area

The longitudinal levels, in detailed survey of a hill road, should be taken at

In case of multi-lane road, overtaking is generally permitted from

The purpose of traffic surveys is to

The joints, for forming satisfactory constituents of a concrete pavement, must

The gradient of a road depends upon the

Greater the super-elevation, more will be convenience to the slow moving traffic.

A terrain with cross-slope less than 10 percent, is called

The parapet walls are usually required on the valley side of the roadway, in order to

A vertical curve on a road provides change in gradient.

The overall height of the vehicle determines the

The rate of rise or fall of the road surface along its length, is called

If the width of cariage way is 10 m and the outer edge is 40 cm higher than the inner edge, then the super-elevation required is

The structure of a road is composed of

As per IRC recommendations, the sub-grade or sub-base layer whatever underlies the concrete wearing slab, in concrete pavements, must confirm to the requirement that

The sub-grade is the final load carrying part of the structure.