Today 11/7/2019, we learn about Road Pavement and Road Accident. 

There is 5layer of Road Pavement.

The first layer is Top soil, the 2nd is Subgrade layer, 3rd is Subbase layer, 4th is Base course and the 5th is Surface layer.

We also learn about Road accident which every road accident have it's causes,factor and solution.

Material for Subgrade layer