In 2007, Pennsylvania coated an 800-foot crash-prone curve with high-friction surfacing; the site had no wet-road crashes for the next eight years
PennDOT treated a dangerous Route 611 curve in 2007; FHWA reported no wet-pavement crashes there for eight years after the upgrade.
We haven't written up this one. Hindustan Times - World News has the full story — the link below goes straight to it.