Pre-season testing showed the FW16 had speed but was difficult to drive. The Fédération Internationale de l'Automobile (FIA) had banned electronic driver's aids, such as active suspension, traction control and ABS, to make the sport more "human". It was these technological advancements that the Williams chassis of the previous years had been built around. With their removal in 1994, Williams had not been a good-handling car, as observed by other F1 drivers, having been seen to be very loose at the rear. Senna himself had made numerous comments that the Williams FW16 had quirks that needed to be ironed out. It was obvious that the FW16, after the regulation changes banning active suspension and traction control, exhibited none of the superiority of the FW15C and Williams FW14B cars that had preceded it. The surprise of testing was Benetton-Ford which was less powerful but more nimble than the Williams.