An extension of antilock brake technology, electronic stability control (ESC) is designed to help drivers retain control of their vehicles during high-speed maneuvers or on slippery roads. Previous research found significant effects of ESC in reducing the risk of fatal single-vehicle crashes. Using data from an additional year of crashes and a larger set of vehicle models, researchers at the Insurance Institute for Highway Safety have updated the 2004 results and found that ESC reduces the risk of fatal multiple-vehicle crashes by 32 percent.