To quickly change direction push hard on the handlebars, left to swerve left and right to swerve right. It's handy when a truck from the opposite direction comes out of a corner and makes a beeline at you until he's taken most of your lane at a closing speed of about 140. You push right and are instantly at the white line on the right edge of the road allowing you to merely feel the rush of wind as he passes by. It's a maneuver I've practiced until instinctive and today's results speak well of it.