The surface of the highway pavement should be designed to allow ______

The equivalent wheel load factors are calculated by using _________

The Westergaard equation was modified by ______

The average vehicles considered for pavement studies are ______

The maximum length of vehicle that can be used on Indian roads is ______

The ratio of flexibility strength applied due to a load and the flexural stress is called ______

Rough and uneven roads increase ______

Which frost heave is dangerous?