Electronically controlled brake (ECB) developed by Toyota Motor Corporation initially for its hybrid and Lexus models, is the world's first production brake-by-wire braking system. The ECB went on sale in Japan in June 2001, first appearing on the Toyota Estima hybrid (first generation), and making its North American debut with the launch of the Lexus RX 400h SUV in April 2005. The ECB is an integral part of the company's Vehicle Dynamics Integrated Management stability control system, by allowing for automatic brake adjustments, which work in conjunction with variable gear-ratio electric power steering systems. Namesake Not to be confused with electronically controlled pneumatic brakes for railways. Applications 2001 Toyota Estima Hybrid 2002 Toyota Alphard Listed by (US model year): 2004–2009 Toyota Prius 2009–2015 Toyota Prius 2006 Toyota Highlander Hybrid 2006–2009 Lexus RX 400h 2005–2007 Lexus GS 430 2007–present Lexus GS 450h 2007–present Lexus LS 460 2008–present Lexus LS 600h 2008–10 Lexus GS 460 2010–present Lexus RX 450h 2011 Lexus LFA See also brake-by-wire Sensotronic (Mercedes-Benz) References Toyota Lexus Vehicle braking technologies