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Los Angeles Tests Reflective 'Cool Pavement' On Streets (dailynews.com)

mikeebbbd writes: As reported in the Los Angeles Daily News, during the current heatwave various officials swooped down on streets coated with an experimental light-gray sealer that makes the old asphalt into a "cool street" -- and it works, with average temperature differences between coated streets and adjacent old asphalt around 10F. At a large parking lot, the temperature reduction was over 20F. If the material holds up and continues to meet other criteria, LA plans to use it on more pavement rehab projects, which could eventually make a difference in the heat island effect. The "CoolSeal" coating is apparently proprietary to a company named GuardTop LLC, costs $25-40K/mile, and lasts 5-7 years. At that price, it's might not be used a lot, at least at first; typical slurry seals run $15-30K/mile.

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  1. Re: Bus stop by Anonymous Coward · · Score: 0, Offtopic

    Its because you live in one of those strange cities like LA where public transit is curiously not seen as a necessity. Most major metropolitans have robust public transit systems that everyone uses.