Why is Smoothness so important?

Studies have shown that a smooth ride is the number one concern of road users. Furthermore, another study has shown that initial smoothness improves the performance and lowers the maintenance cost of a pavement over its life cycle. HMA pavements start out smoother and stay smoother throughout their lives, making them the best choice for new construction. For more information on pavement smoothness, see our series of articles on "Pavement Smoothness".