Final rules for ESC in the US available

The rules for ESC in the United States have been established as a Federal motor vehicle safety standard (No. 126) to require electronic stability control systems on passenger cars, multipurpose passenger vehicles, trucks, and buses with a gross vehicle weight rating of 4,536 Kg or less. 

Based on the best available data, drawn from crash data studies, NHTSA estimates that the installation of ESC will reduce single-vehicle crashes of passenger cars by 34 percent and single vehicle crashes of sport utility vehicles (SUVs) by 59 percent, with a much greater reduction of rollover crashes. NHTSA estimates that ESC has the potential to prevent 71 percent of the passenger car rollovers and 84 percent of the SUV rollovers that would otherwise occur in single-vehicle crashes.  

NHTSA estimates that ESC would save 5,300 to 9,600 lives and prevent 156,000 to 238,000 injuries in all types of crashes annually once all light vehicles on the road are equipped with ESC systems. The agency further anticipates that ESC systems would substantially reduce (by 4,200 to 5,500) the more than 10,000 deaths each year on American roads resulting from rollover crashes. 

 The ESC rules can be downloaded here (975 KB)