Highway Engineering Questions

• In a braking test, a vehicle travelling at 36 km ph was stopped at a braking distance of 8.0 m. The average value of the vehicle's skid resistance (friction coefficient) is
• If V is the velocity in km.p.h., t the brake reaction time in seconds and η the efficiency of the brakes, the stopping distance S of the vehicle, is
• Minimum number of 50 kg cement bags per cubic metre of concrete for a mix corresponding to crushing strength 280 kg/cm2 at 28 days, are
• Reference pillars fixed on the centre line of a proposed road, provide the following information:
• If the elevations along a road increase, the slope of the road along the longitudinal direction, is known as
• Concrete pavement is provided if daily traffic per lane exceeds
• If R is the radius of a main circular curve, Δ is the angle of deflection and α is the polar deflection angle of any point, its radial distance is
• Non-passing sight distance along a road is the longest distance at which the driver of a moving vehicle, may see an obstacle on the pavement
• According to Indian Road Congress, the width of carriageway, is
• The minimum superelevation in rolling terrain in plains, is limited to
• The maximum comfortable retardation applied to moving vehicles, is
• An ideal vertical curve is
• The width of the right of way, is influenced by
• When load is applied on concrete pavement
• The best compromise between the increase of the length of a highway and reduction in its load carrying capacity, is the ruling gradient
• To ensure that bullock carts may not overturn on curves, the maximum value of super-elevation, recommended by I.R.C., is
• The camber on pavements, is provided by
• Roadway width for a National highways and State highways (two-lanes) is
• In complex situations, total time required for a driver to form a judgement and to act, may be taken as
• Ruling gradient on hill roads 300 m above M.S.L. is kept