The maximum spacing of contraction joints in rigid pavements is

Highway facilities are designed for

A. annual average hourly volume

B. annual average daily traffic

C. thirtieth highest hourly volume

D. peak hourly volume of the year

The provision of traffic signals at intersections

A. reduces right angled and rear end collisions

B. increases right angled and rear end collisions

C. reduces right angled collisions but may increase rear end collisions

D. reduces rear end collisions but may increase right angled collisions

In CBR test the value of CBR is calculated at

A. 2.5 mm penetration only

B. 5.0 mm penetration only

C. 7.5 mm penetration only

D. both 2.5 mm and 5.0 mm penetrations

If aggregate impact value is 20 to 30 percent, then it is classified as

A. exceptionally strong

B. strong

C. satisfactory for road surfacing

D. unsuitable for road surfacing