Original sentence: Porous Asphalt Concrete has some downsides, including the initial construction costs, PAC is two to three times more expensive than regular pavement, and needs constant maintenance, especially with heavy traffic.Sometimes, the pavement has to be repaved within 7 years, especially on routes with heavy truck traffic causing widespread track formation
Edited sentence: Porous Asphalt Concrete has some downsides, including the initial construction costs, PAC is two to three times more expensive than regular surface materials, and needs constant maintenance, especially with heavy traffic.Sometimes, the road surface has to be renewed within 7 years, especially on routes with heavy truck traffic causing widespread track formation