The other reason riders probably fail to swerve (other than freezing in a panic, which regular practice might also prevent) is hard braking. A motorcycle, even one with antilock brakes, can't turn and brake hard at the same time. If you have taken an MSF class, you may have heard the traction-pie analogy. If you are using 90 percent of your available traction to brake, you don't have another 30 percent left to turn hard. In addition, a motorcycle that's braking hard, particularly a cruiser, probably resists turning. This means a rider must decide in a split second whether to brake or swerve, and if he swerves, in which direction. If you aren't comfortable with a hard swerve, you may instinctively hit the brakes, even though swerving might allow you to avoid the obstacle while braking just means you hit it at a lower speed. In addition to making you comfortable swerving, practicing teaches you what kind of room you need to execute a swerve and lets your mind rehearse making that split-second decision about whether to brake or change direction.