A 2020 study of 157 treated curves in West Virginia, Pennsylvania and Kentucky found that wet-road crashes fell 83% and total crashes fell 57%
An FHWA study of 157 curves found HFST cut wet-road crashes 83% and total crashes 57%, improving safety where curves, rain and geometry raise friction demands.
We haven't written up this one. Hindustan Times - World News has the full story — the link below goes straight to it.