If P is the number of vehicles per day at last census, r is the increase in traffic and n is the numberof years passed after last census, number of vehicles A per day for design, is

2.

The period of long term plan for the development of roads in India, known as Bombay Plan (Aug.1958), is

3.

California Bearing Ratio method of designing flexible pavements is more accurate as it involves

4.

The absolute minimum radius of horizontal curve for a design speed 60 kmph is

5.

If V is the design speed of vehicles in km/hour, the change of radial acceleration in metres/sec3, is

6.

If the number of lanes on the carriageway of a road is more than two, the total width of lane waysis equal to 3.0 m