Further pitstop races were planned for Paul Ricard and Rockingham, plus the season finale on the Silverstone GP circuit. AUTOSPORT understands the teams have vetoed pitstops on safety grounds. Formula 3 Teams Association (FOTA) spokesman Peter Briggs said: "The cars aren't designed for tyre-change pitstops. You can have failures on certain components and it's not what we want to see. It's no fault of Dallara, but this year's car is a bit fragile for quick pitstops." Series Manager, Lisa Crampton said: "Safety is the key and I don't want to force something on the teams that's going to cause a safety issue." Crampton and Briggs suggested pitstops could return with the next generation of chassis in 2012.