Pre-race
Prior to this race the ACO redeveloped the area around the Dunlop Curve and Dunlop Chicane, moving the Dunlop Curve in tighter to create more run-off area, while also turning the Dunlop Chicane into a larger set of turns. As part of the development, a new extended pit lane exit was created for motorcycles running the Bugatti Circuit. This second pit exit re-enters the track just beyond the Dunlop Chicane and before the Dunlop Bridge.
Before the official test days, the FIA requested that the sportscars should also use this new pit lane, and mandate a 60 km/h speed limit for the entire 450m length, instead of using the normal pit exit in the Dunlop Curve as planned. This was originally used for the Le Mans test days, but due to complaints from the teams the ACO decided to return to the old pit lane exit for the race.
Read more about this topic: 2006 24 Hours Of Le Mans