FIA announces F1 tweaks

Changes for F1 announced by the FIA were:

• Confirmation of the requirement for exhausts to exit out of the upper rear bodywork "in order to ensure that the aerodynamic effect exhaust gases have on the car is kept to an absolute minimum" – a ban on the downforce-boosting technology known as "exhaust-blown diffusers" which has dominated development in the last two seasons
• The re-introduction of one three-day in-season test
• A reduction in the maximum race time, in the event of a grand prix being suspended after the start, to four hours from eight. The maximum racing time is still two hours.
• A change to the safety-car rules which will allow all lapped cars to un-lap themselves before a re-start.
• Taking shortcuts during practice or qualifying, for example to save fuel, has been banned