The National Highway Traffic Safety Administration of the USA has now made stability control mandatory on all vehicles below 4535kg beginning September 2011. The September 2011 deadline applies for carmakers that produce over 5,000 cars a year – other manufacturers will be given more time to put the technology in.
So now stability control systems like DSC and VSA has joined the ranks of mandatory safety systems in all vehicles, airbags being one of them. This will indirectly make ABS mandatory, as stability control depends on the same functions as ABS to selectively activate brakes.
The NHTSA expects SUV rollovers to drop by 59%, and passenger cars to drop by 34% once the regulations are in effect, making stability control available on all cars. Of course, most manufacturers will include an option to disable stability control for some crazy driving opportunity in safe, controlled environments.