The Automobile Club de l'Ouest (ACO) was pleased with how the 1924 regulations had worked. They adjusted the hood-test so that all cars could do it at the same time. The start was the logical point and to stop drivers from jumping the gun they would be lined up on the opposite side of the track. When the flag fell, they would run across, put the hood up and then start the car and get away as quick as possible. This became the origin of the famous “Le Mans start” that was an institution of the race until 1969, when safety concerns led to its end.