Guides such as the Motorcycle Safety Foundation Basic RiderCourse teach that the safest way for a beginning rider to approach a corner on a motorcycle is by doing all slowing, whether with brakes or engine, before the entrance of the turn, discouraging the use of any brakes while the motorcycle is leaned over. The reasons for not trail braking on the street, at least for beginners, include that the steep learning curve of trail braking makes it appropriate only for the race track. The benefit of learning trail braking to the street rider is that knowing and understanding how to slow while entering a corner gives a greater safety margin, particularly in blind, decreasing radius or downhill corners.