This is followed by the turn-in where the driver begins to steer the vehicle toward the apex. Traditionally, many drivers were taught to complete all braking before this turn-in portion and take a more circular path with a constant speed to the apex. Later, many racing drivers started to incorporate trail-braking into their corner entry.
Following the maneuver of turning in toward the apex, historically, many drivers were taught to brake entirely prior to this point and follow a circular path at a constant speed up to the apex. Recently, however, many racing drivers have started incorporating trail-braking during their approach to the turn-in.