Rough roads require more fuel and can result in over 20 additional tons of CO2 per mile, per year.
Smoothing roads by just 10% can increase fuel economy by 4.5%. Smoother Pavements Add Up to Savings at WesTrack
Smoother roads cost less to maintain.
Smoother roads could save $73.5 billion in reduced vehicle maintenance and repairs. Estimating the Effects of Pavement Condition on Vehicle Operating Costs (2012)
Smoother roads last up to 27% longer.
Smoother roads are safer. Crash rates decrease on smoother pavements.