By 2008, New Hampshire researchers had tested porous asphalt through four winters; a later study found it could cut annual salt use by 64% to 77%

UNH researchers conducted a study from 2004 through 2008 involving a porous asphalt parking lot in Durham that examined how well the quicker drainage and increased friction properties performed during multiple winter seasons in New England, as explained in a report from the UNH Stormwater Center detailing the results. In a subsequent study of the exact same site, researchers determined how much salt could be saved using the porous asphalt surface, which was about 75% per year without sacrificing safety.

Raccontata datimesofindia.indiatimes.com