Federal legislation passed in 1991 requires states to use 5 percent pulverized r

Federal legislation passed in 1991 requires states to use 5 percent pulverized rubber in asphalt mixes by October 1993 and 20 percent by 1996, or forfeit 10 percent of their federal funding. A Maine Department of Transportation project is using 100,000 old tires, chipped into 3- and 6-inch pieces, as road filler in an experimental repaving of 400 feet of Route 231 in North Yarmouth. Details, related article